Testing heap size on HP UX with jdk 1.5 64bits

Is three a limit in the heap size for HP UX jdk1.5?

-No, according to this test:

/opt/java1.5/bin/IA64W/java -d64 -Xms256m -Xmx8000m -jar memtest.jar MemTest

(c)jmu | mar 2016 | A simple test program

Creating a byte[] of 3145728 bytes size

A small piece of the array:

hhhhhhhhhh

Sleeping 30 secs

goodbye

Source code:

package memtest;

 public class MemTest {

    public MemTest() {

        super();

    }

 public static void main(String[] args) {

        MemTest memTest = new MemTest();

        System.out.println("(c)jmu | mar 2016 | A simple test program");

        int bytes = 3*1024*1024;

        byte[] cosa = new byte[bytes];

        System.out.println("Creating a byte[] of " + (bytes) + " bytes size");

        String s = new String(new char[bytes]).replace("\0", "h");

        cosa = s.getBytes();

        System.out.println("A small piece of the array:");

        System.out.println(s.substring(9, 19));

        System.out.println("Sleeping 30 secs");

        try{Thread.sleep(30000);}catch(Exception e){e.printStackTrace(System.out);}

        System.out.println("goodbye");

    }

}

Enjoy 😉