Program to find java version

We can easily find the version of java during program execution. There are few System property available which are provide this information.

public class Version
{
    public static void main(String args[])
    {
        // Find version.
        System.out.println(System.getProperty("java.version"));
    }
}

1.8.0_201

When you need more information you can get this way.

public class VersionInfo
{
    public static void main(String args[])
    {
        // Get more information
        System.out.println(System.getProperty("java.vendor"));
        System.out.println(System.getProperty("java.vendor.url"));
        System.out.println(System.getProperty("java.vendor.url.bug"));
        System.out.println(System.getProperty("java.specification.name"));
        System.out.println(System.getProperty("java.specification.vendor"));
        System.out.println(System.getProperty("java.specification.version"));
        System.out.println(System.getProperty("java.vm.name"));
        System.out.println(System.getProperty("java.vm.vendor"));
        System.out.println(System.getProperty("java.vm.version"));
        System.out.println(System.getProperty("java.vm.info"));
        System.out.println(System.getProperty("java.vm.specification.name"));
        System.out.println(System.getProperty("java.vm.specification.vendor"));
        System.out.println(System.getProperty("java.vm.specification.version"));
        System.out.println(System.getProperty("java.vm.version"));
        System.out.println(java.lang.management.ManagementFactory.getRuntimeMXBean().getVmVersion());
        System.out.println(System.getProperty("java.runtime.name"));
        System.out.println(System.getProperty("java.runtime.version"));
        System.out.println(System.getProperty("java.class.version"));
        System.out.println(System.getProperty("jdk.debug"));
        System.out.println(System.getProperty("sun.java.launcher"));
        System.out.println(System.getProperty("sun.management.compiler"));
        System.out.println(System.getProperty("java.vendor.version"));
        System.out.println(System.getProperty("java.version.date"));
    }
}

Output

Oracle Corporation
http://java.oracle.com/
http://bugreport.sun.com/bugreport/
Java Platform API Specification
Oracle Corporation
1.8
Java HotSpot(TM) 64-Bit Server VM
Oracle Corporation
25.201-b09
mixed mode
Java Virtual Machine Specification
Oracle Corporation
1.8
25.201-b09
25.201-b09
Java(TM) SE Runtime Environment
1.8.0_201-b09
52.0
null
SUN_STANDARD
HotSpot 64-Bit Tiered Compilers
null
null

Note result can be different because its based on java version.