Java 语法 索引 ----- 构造函数(constructor)

重载

class MyRectangle{
    int x, y;
    public MyRectangle()             { x = 10; y = 20; }
    public MyRectangle(int a)        { x = a; y = a;   }
    public MyRectangle(int a, int b) { x = a; y = b;   }
}

Constructor chaining

public MyRectangle()             { this(10,20);  }
public MyRectangle(int a)        { this(a,a);    }
public MyRectangle(int a, int b) { x = a; y = b; }

Java 语法 索引 ----- 构造函数(constructor)

时间： 2024-12-25 15:24:08

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