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memorybluej

How do I find the amount of memory used by a program?

I'm running a couple of Java programs in BlueJ. I want to be able to know how much memory the program uses for a given input value. Is there any way I can do this?

Solution

  • 1) to get the maximum amount of memory that your Java application can use Runtime: 

    Runtime runtime = Runtime.getRuntime(); 
System.out.println("max memory: " + runtime.maxMemory() / 1024);

    2)to get how much memory that JVM has allocated for your application :

    Runtime runtime = Runtime.getRuntime(); 
System.out.println("allocated memory: " + runtime.totalMemory() / 1024);

    3)to get how much memory is being used by your application: 

    Runtime runtime = Runtime.getRuntime(); 
System.out.println("free memory: " + runtime.freeMemory() / 1024);