同一类中构造函数互调

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Herio 2022-03-12 14:44:30 博主文章分类：Java ©著作权

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同一类中构造函数互调

同一类中构造函数互调_C

public class Demo01 {
    private String name;
    private int num;
    Demo01(String a,int b){
        name=a;
        num=b;
    }
    Demo01(String a){
        this(a,0);
    }
    Demo01(int b){
        num=b;
    }
    Demo01(){
        this("Unknown");
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getNum() {
        return num;
    }

    public void setNum(int num) {
        this.num = num;
    }
}

public class Test {
    public static void main(String[] args) {
        Demo01 obj = new Demo01();
        Demo01 obj1 = new Demo01("hehao",123);
        Demo01 obj2 = new Demo01("xxxx");
        Demo01 obj3 = new Demo01(666);
        System.out.println(obj.getName());
        System.out.println(obj1.getName());
        System.out.println(obj2.getName());
        System.out.println(obj3.getName());
        
        System.out.println(obj.getNum());
        System.out.println(obj1.getNum());
        System.out.println(obj2.getNum());
        System.out.println(obj3.getNum());
    }
}