Java JVM is 64 Bit is64BitJVM()

Description

Takes an educated guess as to whether 64 bits are supported by the JVM.

License

Open Source License

Return

true if 64-bit support detected, false otherwise

Declaration

public static boolean is64BitJVM() 

Method Source Code

//package com.java2s;

public class Main {
    private static volatile boolean IS_64_BITNESS_KNOWN;
    private static volatile boolean IS_64_BIT_JVM;

    /**/*from  w  ww  .j a va2s  .  c o  m*/
     * Takes an educated guess as to whether 64 bits are supported by the JVM.
     * @return <code>true</code> if 64-bit support detected, <code>false</code> otherwise
     */
    public static boolean is64BitJVM() {
        if (!IS_64_BITNESS_KNOWN) {
            String arch = System.getProperty("os.arch");
            String sunModel = System.getProperty("sun.arch.data.model");
            IS_64_BIT_JVM = "amd64".equals(arch) || "x86_64".equals(arch) || "ppc64".equals(arch)
                    || "64".equals(sunModel);
            IS_64_BITNESS_KNOWN = true;
        }
        return IS_64_BIT_JVM;
    }
}

Related

1. is64Bit()
2. is64Bit()
3. is64BitJavaOnMac()
4. is64BitJavaOnMac()
5. is64BitJre()
6. is64bitJVM()
7. is64BitJVM()