Trending February 2024 # Learn Constructors And Methods Of Jprogressbar # Suggested March 2024 # Top 6 Popular

You are reading the article Learn Constructors And Methods Of Jprogressbar updated in February 2024 on the website Minhminhbmm.com. We hope that the information we have shared is helpful to you. If you find the content interesting and meaningful, please share it with your friends and continue to follow and support us for the latest updates. Suggested March 2024 Learn Constructors And Methods Of Jprogressbar

Introduction to JProgressBar

Web development, programming languages, Software testing & others

Swing API

Progress Monitoring API of the Swing includes a total of three classes that facilitate the use of the progress bars. The subclass of JProgressBar, JComponent is actually considered to be the graphical component that demonstrates the progress of the operation. Additionally, it also can get embedded within the other graphical components.

Constructors of JProgressBar

The constructors of JProgressBar are as under :

JProgressBar(): This constructor is used to create the progress bar without any text on it.

JProgressBar(int orientation): This constructor is used to create the progress bar along with the mentioned orientation in its parameter. In case VERTICAL is mentioned as a parameter then the vertical progress bar gets created and in case SwingConstants.Horizontal is mentioned as a parameter then the horizontal progress bar gets created.

JProgressBar(int min, int max): This constructor is used to create the progress bar along with the mentioned minimum as well as the maximum value.

JProgressBar(int orientation, int min, int max): This constructor is used to create the progress bar along with the mentioned minimum as well as the maximum value and also the specified orientation in the parameter. If SwingConstants.VERTICAL is mentioned as a parameter then the vertical progress bar gets created and in case SwingConstants. HORIZONTAL is mentioned as a parameter then the horizontal progress bar gets created.

Methods of JProgressBar

The methods of JProgressBar are as under :

int getMaximum(): This method is used to return the maximum value of the progress bar.

int getMinimum(): This method is used to return the minimum value of the progress bar.

String getString(): This method is used to return the string representation of the current value of the progress bar.

void setMaximum(int t): This method is used to set the maximum value of the progress bar to the value of t.

void setMinimum(int t): This method is used to set the minimum value of the progress bar to the value of t.

void setValue(int t): This method is used to set the current value of the progress bar to the value of t.

void setString(String t): This method is used to set the value of the progress String to that of t which is a String.

Below is mentioned the syntax for the javax.swing.JProgressBar class.

Syntax:

public class JProgressBar extends JComponent implements SwingConstants, Accessible Examples of  JProgress

Here are some examples of JProgressBar which are given below with implementation:

Example #1 -Horizontal Progress Bar import java.awt.*; import javax.swing.*; public class Progress { public static void main(String[] args) { final int max = 100; final JFrame frame = new JFrame("JProgress Demo"); final JProgressBar jp = new JProgressBar(); jp.setMinimum(0); jp.setMaximum(max); jp.setStringPainted(true); frame.setLayout(new FlowLayout()); frame.getContentPane().add(jp); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(200,200); frame.setVisible(true); for (int i = 0; i <= max; i++) { final int presentValue = i; try { SwingUtilities.invokeLater(new Runnable() { public void run() { jp.setValue(presentValue); } }); java.lang.Thread.sleep(100); } catch (InterruptedException e) { JOptionPane.showMessageDialog(frame, e.getMessage()); } } } }

Output:

`

Example #2 – Vertical Progress bar

Code:

import java.awt.*; import javax.swing.*; import java.awt.event.*; public class progress extends JFrame { static JFrame frame; static JProgressBar bar; public static void main(String[] args) { frame = new JFrame("ProgresBar demo"); JPanel panel = new JPanel(); bar = new JProgressBar(SwingConstants.VERTICAL); bar.setValue(0); bar.setStringPainted(true); panel.add(bar); frame.add(panel); frame.setSize(500, 500); frame.setVisible(true); fill(); } public static void fill() { int j = 0; try { while (j <= 100) { bar.setValue(j + 10); Thread.sleep(1000); j += 20; } } catch (Exception e) { } } }

Output:

Example #3 –  Progress bar with string

Code:

import java.awt.*; import javax.swing.*; public class Jprogress extends JFrame { static JFrame frame; static JProgressBar bar; public static void main(String[] args) { frame = new JFrame("ProgressBar demo"); JPanel panel = new JPanel(); bar = new JProgressBar(); bar.setValue(0); bar.setStringPainted(true); panel.add(bar); frame.add(panel); frame.setSize(500, 500); frame.setVisible(true); fill(); } public static void fill() { int j = 0; try { while (j <= 100) { bar.setString("wait for few soconds"); bar.setString("almost done loading"); else bar.setString("loading initiated"); bar.setValue(j + 10); Thread.sleep(3000); j += 20; } } catch (Exception e) { } } }

Output:

Conclusion

 Thus we can conclude that the progress bar is the key UI element that is needed majorly so as to give feedback to the desired user. The user often doesn’t interact along with the progress bar. The JProgress bar is usually shown whenever the application gets busy, and also it is an indication to the user that the application is performing the task, and it is not frozen.

Recommended Articles

This is a guide to JProgressBar example. Here we discuss the constructors, methods of JProgressBar along with the examples and code implementation. You may also look at the following articles to learn more –

You're reading Learn Constructors And Methods Of Jprogressbar

Learn The Different Methods Of Junit Assert

Introduction to JUnit assertEquals

JUnit assertEquals is one of the methods in the JUnit Library to verify the equality of two objects. For example, one of the objects may be the program output, and the other may be externally supplied to the code. The intention of the verification is to ensure that the program works as per the desired manner during the test and take action if it is not so.

Start Your Free Software Development Course

Web development, programming languages, Software testing & others

JUnit is a very powerful testing tool, in an open-source format, used for testing small as well as large blocks of code, and it has a huge collection of libraries to make testing easy and vibrant. assertEquals is one such library, and there are many more libraries under the assert family, and in this article, we will analyze them.

JUnit Assert Equals Class

The earlier version of JUnit, i.e., JUnit 3, had two different classes: the main class junit.framework.Testcase and an inherited class junit.framework.Assert. All the assert methods are called through the junit.framework.Assert class.

From JUnit version 4 onwards, Annotations were used to mark the tests, and there was no need to extend Testcase class which means that the assert methods are not directly available, but these methods could be imported in static mode from the new Assert class, and that is the reason all such methods under the new class are static methods.

The Assert methods can be imported using the statements

import static org.junit.Assert.*;

Post this import; these static methods can be used without prefix.

JUnit assertEquals Usage

Here the two objects are compared for equality. These objects may have integer, floating-point, and Boolean values. If the values are not equal, then AssertError will be thrown, and if the values are equal, it returns true.

assertEquals(a, b) is the exact code used in the comparison of the objects.

The objects A and B should be of the same data type

Objects A and B will get converted to their wrapper object type

Value in object A will be compared with B.

If values are equal, it will return true; otherwise, it will trigger failure.

JUnit Assert Methods

The class org.junit.Assert class contains the following methods in it, which can be called in to test various conditions.

assertArrayEquals

Method Name Access Specifier Return Type Details

assertArrayEquals – byte[ ] Static void Verifies bytes arrays (a, b) are equal

assertArrayEquals – char[ ] Static void Verifies char  arrays (a, b) are equal

assertArrayEquals – double[ ] Static void Verifies double arrays (a, b) are equal

assertArrayEquals – float[ ] Static void Verifies float arrays (a, b) are equal

assertArrayEquals – int[ ] Static void Verifies integer arrays (a, b) are equal

assertArrayEquals – long[ ] Static void Verifies long arrays (a, b) are equal

assertArrayEquals – objects[ ] Static void Verifies object arrays (a, b) are equal

assertArrayEquals – short[ ] Static void Verifies short arrays (a, b) are equal

The exact syntax is

assertArrayEquals ( xxxx, expecteds, xxxx, actuals ) xxxx – Byte, Char, Double, Float, Int, Long, Objects, Short assertArrayEquals ( String, message, xxxx, expecteds, xxxx, actuals)  -  With message xxxx – Byte, Char, Double, Float, Int, Long, Objects, Short assertEquals

Access Specifier Return Type Method Name /

Detail of the method

static  Void assertEquals ( double expected, double actual )

Verifies whether variables (a, b) with floating-point type are equal.

This functionality is not in use. Instead of this, a new function

assertEquals ( double expected, double actual, double epsilon ) is used

static void assertEquals ( double expected, double actual, double delta )

Verifies whether variables (a, b) with floating-point type are equal within a positive delta value

static void assertEquals ( long expected, long actual )

Verifies whether variables (a,b) with long integers type are equal

static void

Verifies whether multiple objects(a, b) are equal. It is not in use. Instead, it is recommended to use assertArrayEquals

static void assertEquals (object  expected, object  actual )

Verifies whether objects (a, b) are equal.

assertEquals  (With Message)

Access Specifier Return Type

Method Name / Detail of the method

static  Void assertEquals ( String message, double expected, double actual )

Verifies whether variables (a, b) with floating-point type are equal.

This functionality is not in use. Instead of this, a new function

assertEquals ( String message, double expected, double actual, double epsilon ) is used

static void assertEquals ( String message, double expected, double actual, double delta )

Verifies whether variables (a, b) with floating-point type are equal within a positive delta value

static void assertEquals ( String message, long expected, long actual )

Verifies whether variables (a,b) with long integers type are equal

static void assertEquals ( String message, objects [ ] expected, objects [] actuals )

Verifies whether multiple objects(a, b) are equal. It is not in use. Instead, it is recommended to use assertArrayEquals

static void assertEquals ( String message, object  expected, object  actual )

Verifies whether objects (a, b) are equal.

Others

Access Specifier Return Type

static void assertFalse (boolean condition)

Verifies whether the given condition is false

static void assertFalse (String message, boolean condition)

Verifies whether the given condition is false (with a message)

static void assertNotNull(String message, Object object)

Verifies whether the given object is not null

static void assertNotsame(String message, Object unexpected Object actual)

Verifies whether the two objects referred are not the same

static void assertNull(String message, Object object)

Verifies whether the given object is null

static void assertsame(String message, Object expected Object actual)

Verifies whether the two objects referred are the same

static void assertTrue (String message, boolean condition)

Verifies whether the given condition is true

Example of assertEquals import org.junit.Test; import static org,junit.Assert.assertEquals;    String firstobject = "Jupiter"; String secondobject = "Jupiter"; assertEquals(firstobject , secondobject);

The above code will return true because both the strings have the same value.

Conclusion – JUnit assertEquals

Methods in Assert class, especially assertEquals, facilitate testing of equality conditions and ensure that an error-free product is delivered on time.

Recommended Articles

This is a guide to JUnit assertEquals. Here we discuss the following methods in it, which can be called in to test various conditions. You may also have a look at the following articles to learn more –

Constructor, Methods And Examples Of Java Printwriter

Introduction to Java PrintWriter

The java PrintWriter class is used to print objects in the formatted representation to the text output stream. The PrintWriter class is a built-in class in java that defines the java.io.PrintWriter package. The Writer class is a superclass of the PrintWriter. The PrintWriter class enables to write the formatted object to the underlying Writer class, for example, to write int, double, long and other primitive object or data as in the text, not in the values of the bytes. The PrintWriter class implements all the print method as the PrintStream except the methods which write the raw bytes. As the PrintWriter class intended to write the text, it is useful to generate reports to mix the numbers and text.

Start Your Free Software Development Course

Syntax:

The following is the declaration for chúng tôi PrintWriter class:

public class PrintWriter extends Writer { }

The above is the syntax of the PrintWriter, where it is extended to the Writer class.

Constructors of Java PrintWriter Class

Given below are the constructors mentioned:

PrintWriter(File file): These constructs create the new instance of PrintWriter, with the specified file and which is not automat line flushing.

PrintWriter(File file, String ch): These constructs create the new instance of PrintWriter, with the specified file, charset, and not automatic line flush.

PrintWriter(OutputStream out): These constructs create the new instance of PrintWriter from an existing OutputStream and which is not automat line flush.

PrintWriter(OutputStream out, booleanautoFlush): These constructs create the new instance of PrintWriter from an existing OutputStream.

PrintWriter(String fName): These constructs create the new instance of PrintWriter with the specified file name and which is not automat line flush.

PrintWriter(String fileName, String csn): These constructs create the new instance of PrintWriter with the specified file name and charset, and it is not automat line flush.

PrintWriter(Writer out): These constructs create the new instance of PrintWriter, which is not an automat line flush.

PrintWriter(Writer out, booleanautoFlush): These constructs create the new instance of PrintWriter.

Methods of Java PrintWriter Class

Given below are the methods:

public void print( Object obj): This method prints an object.

public void println(boolean x): This method prints the boolean value.

public void println(char[] x): This method prints an array of characters.

public void println(int x): This method prints an integer. Similar methods to prints for all different primitive objects.

public PrintWriterappend(char ch): This method appends the pass character to the writer.

public PrintWriterappend(CharSequencechseq): This method appends the specified character sequence to the writer.

public PrintWriterappend(CharSequencech, int start, int end): This method appends a subsequence of pass character to the writer.

public booleancheckError(): This method checks its error state and flushes the stream.

public protected void clearError(): This method clears an internal error state of the stream.

public protected void setError(): This method indicates that an error occurs.

public PrintWriterformat(String format, Object..args): This method writes the formatted string to this writer with the passed format string and arguments.

public void flush(): This method flushes the stream.

public void close(): This method closes the stream.

Examples of Java PrintWriter

Given below are the examples mentioned:

Example #1

Here we create a PrintWriter object by using the PrintWriter class constructor and pass the file name to write in it.

package p1; import java.io.File; import java.io.PrintWriter; public class Demo { public static void main( String[] arg) { try { PrintWriter pw =null; pw = new PrintWriter(new File("D:\data.txt")); pw.write("This ia an example text for PrintWriter."+"n"); pw.write("This ia an example number for PrintWriter :" +(int)563+ "."); pw.flush(); pw.close(); System.out.println("Print writer done. you can open the file."); }catch(Exception e) { System.out.println(e); } } }

Output:

When we open the file, we can see the content of the file as below:

As in the above code, the file “data.txt” is opened to write some data with the help of PrintWriter class and its constructor.

Example #2

Code:

package p1; import java.io.File; import java.io.PrintWriter; import java.util.Locale; public class Demo { public static void main( String[] arg) { String str="Hello"; String str2=" World"; char ch='H'; try { PrintWriter pw =null; pw = new PrintWriter(System.out); pw.print("print(inti) : "+ 123); pw.println(); pw.print("print(float f) : " +34.65f); pw.println(); pw.print("print(boolean b) : " +true); pw.println(); pw.print("print(char ch) : "+ch); pw.println(); pw.print("print(String s) : "+str); pw.println(); pw.print("print(Object Obj) : " +pw); pw.println(); pw.print("append(CharSequencecsq) : "); pw.append(str); pw.append(str2); pw.println(); pw.println("checkError() : " +pw.checkError()); pw.print("format() : "); pw.format(Locale.CHINA, " This is an china formatted example for %s text.",str); pw.flush(); pw.close(); }catch(Exception e) { System.out.println(e); } } }

Output:

As in the above code, writing some of the data we can see in the output to the out console (System.out) with PrintWriter class constructor and methods.

Conclusion

The PrintWriter class is a built-in class in java that is defined in the java.io.PrintWriter package, and it is used to print an object in the formatted representation to the text output stream. The PrintWriter class is the subclass of the Writer class.

Recommended Articles

This is a guide to Java PrintWriter. Here we discuss the introduction to java PrintWriter, constructors, methods and examples for better understanding. You may also have a look at the following articles to learn more –

Learn The Concept Of String Literal And String Object In Rust

Introduction to Rust string

The string is a data type in Rust that can be classified into two types, namely string literal written as &str, also known as string slice, and String object written as String, and the representation of &str is done by &[u8] that points to the UTP 8 sequence, and the data present in the string can be viewed using &str. The size of &str is fixed, meaning it cannot be resized. In contrast, the String object is encoded in UTF-8 sequence, and it is stored in heap memory with dynamic memory allocation. In contrast to a string literal, a String object in Rust has a dynamically changing size as it grows, and it is not terminated by a null character.

Start Your Free Software Development Course

The syntax to declare string literal or &str in Rust is as follows:

let variable_name:&str="string_to_be_stored";

In the given program, the term “variable_name” represents the actual name of the variable that stores the string.

string_to_be_stored is the string literal that will be stored inside the variable.

The syntax to declare a String object or String in Rust is as follows:

String::new()

We can create an empty string using the above syntax.

Or

String::from()

We create a string with a default value by passing the default value as a parameter to the from() method.

Working of String in Rust

We use string literals or &str when the value of the string is known at compile time.

We call a set of characters hardcoded into a variable a string literal.

The module std::str consists of string literals.

The string literals are static in nature by default; that is, they are valid as long as the program is running.

The Standard library consists of the String object type.

The standard library pub struct string defines the String object type.

The size of the String object type is growable and can be resized.

The String object type is mutable.

The String object type in Rust encodes strings in UTF-8 sequence.

To represent string values at runtime, we can use the String object.

In Rust, the String object stores its data on the heap.

Examples of Rust string

Here are the following examples mentioned below

Example #1

Here is an example of a Rust program that demonstrates the use of string literals. It creates two string literals, stores values inside them, and then displays the output on the screen.

fn main() { let firststring:&str="Welcome to"; let secondstring:&str = "EDUCBA"; println!("The string stored using string literal is : {} {}",firststring,secondstring); }

In the given program, we use a string literal named “firststring” to store a specific string value. Then we create another string literal called secondstring to store another string value.

Then we display the two string values stored in the two string literals as the output on the screen.

Example #2

Here is an example of a Rust program that demonstrates the use of string objects. It creates an empty string using the new() method and another string object using the from() method. We pass the string that needs to be stored in the second string object as a parameter to the from() method. Finally, it displays the lengths of the two strings as the output on the screen using the len() method.

fn main() { let firststring = String::new(); let secondstring = String::from("EDUCBA"); println!("The length of the string stored in the firststring is : {} ",firststring.len()); println!("The length of the string stored in the secondstring is : {} ",secondstring.len()); }

The output of the above program is as shown in the snapshot below:

In the above program, we create an empty string called the firststring using the new() method. Hence we are creating another string called secondstring using the () method. To store the value of the string in the variable “secondstring,” we pass it as a parameter to the from() method. Then we use the len() function to find the length of each string. The program will output the lengths of the strings “firststring” and “secondstring” on the screen.

Example #3

Here is an example of a Rust program that demonstrates the use of String objects. The program creates two string objects by using the from() method and passing the strings as parameters to store them. Finally, it displays the length of the two strings using the len() method, and prints the output on the screen.

fn main() { let firststring = String::from("Welcome to"); let secondstring = String::from("EDUCBA"); println!("The length of the string stored in the firststring is : {} ",firststring.len()); println!("The length of the string stored in the secondstring is : {} ",secondstring.len()); }

The output of the above program is as shown in the snapshot below:

In the given program, we create two string objects, “firststring” and “secondstring,” using the from() method. To store the values of the strings in the variables “firststring” and “secondstring,” we pass them as parameters to the from() method. Then we use the len() function to find the length of each string. The program will display the length of the first string and the length of the second string as the output on the screen.

Conclusion

In this article, we have learned the concept of String literal and String Object in Rust through definition, syntax, and working String literal and String Object in Rust with corresponding programming examples and their outputs to demonstrate them.

Recommended Articles

We hope that this EDUCBA information on “Rust string” was beneficial to you. You can view EDUCBA’s recommended articles for more information.

Learn The Examples And Advantages

Introduction to PostgreSQL STRING_AGG()

PostgreSQL supports various kinds of aggregate functions, The STRING_AGG() function is one of the aggregate functions which is used to concatenate the list of strings, and it will add a place to a delimiter symbol or a separator between all of the strings. The separator or a delimiter symbol will not be included at the end of the output string. The PostgreSQL STRING_AGG() function is supported by PostgreSQL 9.0 version, which performs the aggregate option related to the string. We can use various separators or delimiter symbols to concatenate the strings.

Start Your Free Data Science Course

Hadoop, Data Science, Statistics & others

Syntax

Explanation:

The STRING_AGG() function takes input ORDER BY clause is an optional and other two arguments as follows:

expression: This is a character string that is any valid expression.

separator/delimiter: This defines the separator/delimiter used for string concatenation.

The ORDER BY clause is optional and defines the order of concatenated string results.

The ORDER BY has the syntax as follows:

How does PostgreSQL STRING_AGG() function works?

The input expression needed should be a character string data type. We can also use other data types but only need to ensure that we have explicitly cast other data types to the character string data type.

The PostgreSQL STRING_AGG() returns us the result in string type.

The STRING_AGG() is generally used with the GROUP BY clause like we use other PostgreSQL aggregate functions such as MIN(), MAX(), AVG(), SUM(), COUNT(), etc.

Examples to Implement PostgreSQL STRING_AGG() function

We will create a table named ‘student’ and ‘course’ by using the CREATE TABLE statement as follows:

STUDENT TABLE:

create table student ( stud_id serial PRIMARY KEY, stud_name VARCHAR(80) NOT NULL, stud_grade CHAR(1) NOT NULL, stud_country VARCHAR(80) NOT NULL, course_id int NOT NULL );

COURSE TABLE:

create table course ( course_id serial PRIMARY KEY, course_name VARCHAR(80) NOT NULL );

Now, we will insert some data into the ‘course’ table by using the INSERT INTO statement as follows:

INSERT INTO course(course_name) VALUES ('Computer'), ('Mechanical'), ('Civil'), ('Electrical');

Illustrate the above INSERT statement’s result using the following SQL statement and snapshot.

select * from course;

INSERT INTO student(stud_name,stud_grade,stud_country,course_id) VALUES ('Smith','A','USA',1), ('Johnson','B','USA',2), ('Williams','C','USA',3), ('Jones','C','Canada',1), ('Brown','B','Canada',2), ('Davis','A','Canada',3), ('Aarnav','A','India',1), ('Aarush','B','India',2), ('Aayush','C','India',3), ('Abdul','C','UAE',1), ('Ahmed','A','UAE',3), ('Ying', 'A','China',1), ('Yue','B','China',2), ('Feng', 'C','China',3), ('Mian','C','South Korea',1), ('Fei','B','South Korea',2), ('Hong','A','South Korea',3);

Illustrate the above INSERT statement’s result using the following SQL statement and snapshot.

select * from student;

SELECT c.course_name AS "course name", s.stud_name AS "student name" FROM course c RIGHT JOIN student s ON c.course_id = s.course_id ORDER BY 1;

Illustrate the result of the above statement by using the following snapshot.

We can concatenate the student names by using the STRING_AGG() function by modifying the above SQL statement as follows:

SELECT crs.course_name AS "course name", string_agg(stud.stud_name, ', ') AS "student list" FROM course crs JOIN student stud ON crs.course_id = stud.course_id GROUP BY 1 ORDER BY 1;

Illustrate the result of the above statement by using the following snapshot.

SELECT  stud_grade, STRING_AGG(stud_name,', ') AS StudentsPerGrade FROM student GROUP BY stud_grade ORDER BY 1 ;

Illustrate the result of the above statement by using the following snapshot.

In the above example, the resulting snapshot shows us the students concatenated by a comma separator with a similar grade obtained.

SELECT STRING_AGG(stud_name, ', ') AS "student_names", stud_country FROM student GROUP BY stud_country;

Illustrate the result of the above statement by using the following snapshot.

In the above example, we observe that the code groups and concatenates all students from the same country, utilizing a comma separator.

Advantages

We can control the order of the result by using the ORDER BY clause.

The PostgreSQL STRING_AGG() function returns the result in string format.

We can use the STRING_AGG() function to concatenate all strings and add a delimiter symbol or separator between them.

The PostgreSQL STRING_AGG() supports various types of delimiter symbols or separators and does not include delimiter symbols or separators at the end of the string.

Conclusion

From the above article, we hope you understand how to use the PostgreSQL STRING_AGG() function and how the PostgreSQL STRING_AGG() function works. Also, we have added several examples of the PostgreSQL STRING_AGG() function to understand it in detail.

Recommended Articles

We hope that this EDUCBA information on “PostgreSQL STRING_AGG()” was beneficial to you. You can view EDUCBA’s recommended articles for more information.

Learn Top 9 Useful Versions Of Powershell

Introduction to PowerShell Versions

PowerShell provide a command-line powerful interface to perform various automation works. If you are aware of Linux and mac command line, PowerShell command-line is the same. PowerShell’s first release was in 2006 with its version 1.0. This version supports Windows XP SP2, Windows Server 2003 SPI, and Windows Vista. Every version comes with a few more supports and commands. So currently PowerShell version 6 is going on as stable version and 7 is about to come. PowerShell version 6 supports Windows, Mac, and Linux operating systems. So in very simple terms, the biggest change in its version is support for another platform, which means support for operating systems other than Windows. In another version, there are additions of a few more commands and syntax.

Start Your Free Data Science Course

Hadoop, Data Science, Statistics & others

Different Versions of PowerShell

Below are the 9 Different versions of PowerShell:

1) PowerShell 1.0 2) PowerShell 2.0

Till PowerShell 1 we were only capable to write commands for the local machine, that is, we were only able to control local machines, but in PowerShell 2 with the help of WS-management, we can write our commands for a remote machine (remote machine means accessing others computer from your computers).

New changes in PowerShell 2.0 are given below:

Background Jobs: Here, to invoke asynchronous any job it uses a Background job, and it waits for user input, for example, you are running any script and you want that script should ask the input value than only it should execute.

Introduction of Transactions: In this PowerShell provides the ability to write commands where a developer can roll back their changes.

Modules: This gives PowerShell the ability to self-managed, in very simple we can write a script and this script can be a command for another script, and define our own features to be used in other scripts.

Data Language: It allows localization, means we can write a script on one domain and when the same script will run on other domains then the local string will be imported at the runtime of script.

Debugging of Scripts: It allows us to set any breakpoint into the script for debugging.

Network File Transfer: With the introduction of Background Intelligent Transfer Service in PowerShell, it becomes able to asynchronous file transfer between two machines.

3) PowerShell 3.0

PowerShell 3.0 releases on 02 December 2011 and it supported Windows 7,8 including Windows Server 2012. The new improvements are given below:

Jobs Scheduling: We can set any time for jobs to be run, for example, if you have jobs A, B, C then it can be scheduled time for execution of all these jobs.

Session Connectivity: Control over remote sessions, When a script needs it can connect and disconnect to session.

Support for Delegation: It can delegate a user with less permission for Administrative tasks.

Detect Automatic Modules: It gives power to PowerShell scripts to load modules implicitly when it was needed by scripts.

New Commands and Features: There are many new commands also added in this version, like get-WmiObject, dwin32_logicaldisk, volumes, firewalls, It also includes network connectivity and also allows us to handle printers.

4) PowerShell 4.0

in this version, it starts supporting Windows 8.1 and Windows Server 2012 R2. PowerShell 4.0 introduced a few new features they are.

Save-Help: One of the important improvements in PowerShell 4.0 is it allow you to save Help for that module which is remote.

Improved Debugging: Debugging was already there, but i PowerShell 4.0 it comes with few more debugging features like workflow support, able to execute remote debug remote machine.

Switch Option in -PipelineVariable: To expose the current pipeline we use PipelineVariable.

Desired State Configuration: In simple terms, this version of PowerShell allows us to configure a system where it can recognize the machine.

Where and ForEach: Where and ForEach method syntax provides an alternate method of filtering and iterating over objects.

Example:

The example of foreach in the below screen, here we are displaying all numbers except number 5, this could be useful for filtering data.

}

Output:

Example:

The Example of where is given below:

5) PowerShell 5.0

The main features include in PowerShell 5.0 are OneGet command which supports Chocolatey’s.

Example:

It introduced two new commands called Get-TimeZone and Set-TimeZone.

Get-TimeZone

Output:

6) PowerShell 6.0

This release was one of the measured releases, as in this release is made PowerShell as cross-platform. Cross-platform means are independent of any operating system(support, for example, macOS, Linux, and Windows). It becomes free and completely open-source. This release was achieved on 10th January 2023 and it is available for Windows, macOS, and Linux.

7) PowerShell Core 6.1

Some of the important features added in 6.1 are given below:

Ability to support 1900 commands to Windows 10 and Windows Server 2023.

It builds on .NET core 2.1.

support all new versions of Windows, macOS, and Linux.

There was also an improvement in performance.

8) PowerShell Core 6.2

Example:

In this example, I am using PowerShell 6.2 and checking my Operating system details.

$PSVersionTable

Output:

The above example shows how I am able to run PowerShell on Linux with PowerShell version 6.2. If i will go with any older version than it would not work.

9) PowerShell 7

New features in PowerShell 7 include:

It is based on the .NET Core 3.1.

ForEach-Object -Parallel.

Windows compatibility wrapper.

Notification for new versions.

Get-Error cmdlet to handle errors powerShell.

It includes ternary operators like (x ? y: z), so if you are using PowerShell version 7 then the only a ternary operator will work.

Out-GridView, -ShowWindow are some new commands.

Note: The ternary operation will not work if you are using lower than 7 versions. See the example below:

Conclusion

From version 1 to 7 every version comes with some new commands and features, but they did big architectural changes by supporting operating systems other than Windows like macOS and Linux.

Recommended Articles

This is a guide to PowerShell Versions. Here we discuss the basic concept and top 9 different PowerShell versions along with the examples. You may also look at the following articles to learn more –

Update the detailed information about Learn Constructors And Methods Of Jprogressbar on the Minhminhbmm.com website. We hope the article's content will meet your needs, and we will regularly update the information to provide you with the fastest and most accurate information. Have a great day!