What is program arguments and VM arguments in Eclipse?

Asked By: Benedetto Bruckmayer | Last Updated: 27th January, 2020
Category: technology and computing programming languages
4.1/5 (1,982 Views . 21 Votes)
Program arguments are arguments passed to your program and available in the args array of your main method public static void main(String[] args) VM arguments are passed to the virtual machine and are designed to instruct the VM to do something. You can do things like control the heap size, etc.

Click to see full answer

Also, what are VM arguments eclipse?

VM arguments are typically values that change the behaviour of the Java Virtual Machine (JVM). For example, the -Xmx256M argument allows the Java heap to grow to 256MB. The Eclipse runtime is also configurable via many system properties which can be passed as VM arguments in the form: -DpropertyName=propertyValue.

Additionally, how do I assign a VM argument in IntelliJ?

  1. Click Configuration tab of the Edit Run/Debug Configurationdialog.
  2. In the Main class field, specify the class that contains the main() method.
  3. In the VM options field, type optional VM arguments, for example the heap size, garbage collection options, file encoding, etc.

Also question is, how do I pass a VM argument in eclipse?

Pass program and VM arguments in eclipse:- Right click on project -> Go to Run As -> Run configurations.. and click on arguments tab. Program arguments are added separated by spaces as shown in following diagram (14 12 added separated by spaces).

How do I pass multiple program arguments in IntelliJ?

In IntelliJ, if you want to pass args parameters to the main method. you need to pass the arguments through space separated and click apply and save.


  1. ctrl + alt + r.
  2. e.
  3. Enter.
  4. Program arguments: Write your command line parameters (space between each item if you have more than one argument)
  5. Enter.

34 Related Question Answers Found

What is program arguments in Java?

The java command-line argument is an argument i.e. passed at the time of running the java program. The arguments passed from the console can be received in the java program and it can be used as an input. So, it provides a convenient way to check the behavior of the program for the different values.

How do you add arguments in Java?

Another Example of a Java program using Command Line Arguments: Args. java
  1. Click on Run -> Run (not Run Last Launched).
  2. Click on the Arguments tab,
  3. Then just click Apply, followed by Run.
  4. If you were to click on Run -> Run Last Launched at this point,
  5. To change the value of the command line argument,

How do I enable JVM arguments?

Click Edit Profile and select a profile from the list. Enable JVM Arguments. In the "Java Settings (Advanced)" section, check the "JVM Arguments" box. This will you to enter commands to modify the Minecraft program.

How do you set a VM argument in STS run configuration?

Setting execution arguments
  1. Select Run > Run Configurations or.
  2. Select an existing configuration or create a new launch configuration by pushing the New button after selecting Java Application.
  3. On the Arguments tab for the configuration, you can specify the following fields as necessary:
  4. Click Apply or Close when you are done.

How can you increase the heap size in the memory?

You can increase or change size of Java Heap space by using JVM command line option -Xms, -Xmx and -Xmn. don't forget to add word "M" or "G" after specifying size to indicate Mega or Gig. for example you can set java heap size to 258MB by executing following command java -Xmx256m HelloWord.

How do I change JVM settings?

You can configure Java Virtual Machine (JVM) settings for your server instance.

To edit the location of the JDK and to specify debug options
  1. Access the Server Manager and choose the Java tab.
  2. Click JVM General.
  3. Set the Java Home.
  4. Click OK.

What is the max heap size for 64 bit JVM?

So theoretical limit for maximum heap size on 32 bit JVM is 4GB and for 64 bit JVM its 2^64.

What are JVM args?

JVM arguments. Decide on a maximum heap size for the JVM, based on the memory availability in the server. (Interact is not a memory intensive application). Set the max and min sizes of the heap to be the same (using -Xmx and -Xms arguments), which increases the startup time, but gives better throughput.

How do I pass multiple program arguments in Eclipse?

Run your program
  1. Select your Java class from the left side column.
  2. In the right side menu select “Arguments” tab.
  3. In the “Program Arguments” text area type the input numbers separated by spaces or newline.
  4. Click Run button.

How do I set system properties?

In java, you can set a custom system property either from command tools or from java code itself.
  1. Set system property from command line (“-D” option) java -Dcustom_key= "custom_value" application_launcher_class.
  2. Set system property from code using System. setProperty() method. System.

How do I set heap size in eclipse?

Open Eclipse and in the toolbar menu, go to Run -> Run Configurations… In the left pane of Run Configurations window, navigate to the Java Application node and select the Java application for which you need to increase the heap size. Then in the right pane, click on the Arguments tab.

How do I set program arguments in Eclipse?

  1. To specify command line arguments in eclipse, go to Run -> Run…
  2. Make sure you are running the correct project for which you want to specify command line arguments for, and then select the arguments tab.
  3. Now enter the arguments you want, separated by spaces.

How do you read a command line argument in Java?

The command line argument is the argument passed to a program at the time when you run it. To access the command-line argument inside a java program is quite easy, they are stored as string in String array passed to the args parameter of main() method.

How do you pass arguments in run configuration?

We can also pass command-line arguments to a program in Eclipse using Run Configurations.
  1. Step 1: Open the Class Run Configurations Settings. From the class editor, right click and chose "Run As" -> "Run Configurations".
  2. Step 2: Specify the Program Arguments in the Arguments Tab.
  3. Step 3: Click on the Run button.

How use IntelliJ command line?

Open the Terminal tool window?
You can change the default start directory on the Tools | Terminal page of IntelliJ IDEA settings Ctrl+Alt+S . If you right-click any file (for example, in the Project tool window or any open tab) and select Open in Terminal, this will run the terminal in the directory of that file.

How do I change edit settings in IntelliJ?

Edit an existing run/debug configuration?
With the Navigation Bar visible (View | Appearance | Navigation Bar), choose Edit Configurations from the run/debug configurations selector. Press Shift+Alt+F10 , then press 0 to display the Edit Configuration dialog, or select the configuration from the popup and press F4 .

How do I run a program in debug mode IntelliJ?

Run the program in debug mode?
  1. From the main menu, select Run | Edit Configurations.
  2. Enter arguments in the Program arguments field.
  3. Click the Run button near the main method or its containing class. From the menu, select Debug.