1,默认初始化
2,显示初始化
3,构造初始化
package com.ma.demo5;
public class Demo {
String name = "紫霞仙子";
int age = 18;
public Demo(String name, int age) {
this.name = name;
this.age = age;
}
public void show() {
System.out.println(this.name + " " + this.age);
}
}
package com.ma.demo5;
public class Test {
public static void main(String[] args) {
Demo dd = new Demo("思美人", 22);
dd.show();
}
}
