jconcole

位置：

C:\Program Files\Java\jdk1.8.0_91\bin\jconsole.exe

for (int i = 0; i < 10000; ++i) {

    Object obj = new Object();

    System.out.println("obj= " + obj);

}

没有请求时：

Object obj = null;

        for (int i = 0; i < 10000; ++i) {

            obj = new Object();

            System.out.println("obj= "+ obj);

        }