Java Utililty Methods JVM

List of utility methods to do JVM

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Description

The list of methods to do JVM are organized into topic(s).

Method

String getJVM()
get JVM

String separator = System.getProperty("file.separator");
String path = System.getProperty("java.home") + separator + "bin" + separator;
if ((getOS().equals("Windows")) && (new File(path + "javaw.exe").isFile())) {
 return path + "javaw.exe";
return path + "java";

String getJVMClassPath(boolean includeBootClassPath)
get JVM Class Path

String jvmClassPath = System.getProperty("java.class.path");
if (includeBootClassPath) {
 String bootClassPath = System.getProperty("sun.boot.class.path");
 jvmClassPath = jvmClassPath.concat(File.pathSeparator).concat(bootClassPath);
return jvmClassPath;

String getJvmDll(String javahome)
get Jvm Dll

boolean isJDK = false;
File rtJar = new File(javahome, "jre/lib/rt.jar");
if (rtJar.exists()) {
 isJDK = new File(javahome, "lib/tools.jar").exists();
} else {
 rtJar = new File(javahome, "lib/rt.jar");
File jrebase = new File(javahome);
...

Object getJvmExecutablePath()
Get the path of the JVM executable.

String javaHome = System.getProperty("java.home");
File jvmExe = new File(javaHome + "/bin/java");
if (jvmExe.exists()) {
 return jvmExe.getPath();
return "java";

String getJVMPath()
get JVM Path

return System.getProperty("java.home") + File.separator + "bin" + File.separator + "java";

boolean isJdk()
Tests if the running platform is a JDK.

return getJrePath().endsWith(File.separator + "jre");