Suppose you have a running Java process and you would like to inspect its running status, for example how many object instance are created or memory consumption status, you can use some standard tool provided by JDK.

我下图代码第五行和第九行分别定义了一个整型变量和一个整型常量： static final int number1 = 512; static int number3 = 545; Java程序员都知道两者的区别。 下面我们就用javap将.class文件反编译出来然后深入研究Java里整型变量和整型常量的区别。 使用命令行javap -c constant.ConstantFolding查看.class文件反编译...