java this调用本类方法_java中如何调用类自己方法的函数this-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_28533239/article/details/90260298

本文详细介绍了Java中构造函数的优化技巧，通过使用this关键字调用不同参数的构造函数，避免了代码重复，提高了代码的可读性和维护性。文章通过具体示例展示了如何在类初始化时设置属性，并提供了实例演示。

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package cn.mldn.demo;

class fun_c {
   private String name;
   private int calss;
   private int age;
   private double grade;

   public fun_c() {
       this("sdf",1,0,89.0);
       //this.name="sdf";
       //this.calss=1;
       //this.grade=89.0;

   }

   public fun_c(String name,int calss) {

       this(name,calss,0,0.0);

       //this.name=name;
       //this.calss=calss;

   }

   public fun_c(String name,int calss,int age) {
       this(name,calss,age,0.0);
       //this.name=name;
       //this.calss=calss;
       //this.age=age;

   }

   public fun_c(String name,int calss,int age,double grade) {
       this.name=name;
       this.calss=calss;
       this.age=age;
       this.grade=grade;

   }


   public String getinfo() {

        return "姓名："+this.name+",年龄："+this.age+"，班级"+this.calss+"，分数"+this.grade;


   }

}

public class Demo {

   public static void main(String[] args) {
       // TODO Auto-generated method stub
fun_c f=new fun_c("ss",12,68,898.0);
System.out.println( f.getinfo());
   }

}
// 以上使用了this 调用本类的属性和方法这里重载了多个构造函数使用this 调用全参构造函数来避免代码的重复性使用