What is the default maximum heap size for Sun's JVM from Java SE 6?

Question

What is the default maximum heap size for Sun\'s JVM from Java SE 6 (i.e. equivalent to setting -Xmx)?

Looks like for Java SE 5 with a server-class machine, it\'s

Answer 1

One can ask with some Java code:

long maxBytes = Runtime.getRuntime().maxMemory();
System.out.println("Max memory: " + maxBytes / 1024 / 1024 + "M");

See javadoc.