数据准备
main类
//运行时, jvm 把AppMain的信息都放入方法区
public class AppMain {
//main方法本身放入方法区
public static void main(String[] args) {
Sample test1 = new Sample("测试1");
test1.printName();
}
}
Sample 类
public class Sample {
private String name;
//new Sample实例后,name引用放入栈区, name 对象放入堆
public Sample(String name){
this.name = name;
}
//printName方法本身放入 方法区
public void printName(){
System.out.println(name);
}
}