this和super关键字

//c4:Constructor1.java

//author:ZhangHongbin

//This program is protected by copyright laws.

//Call constructor within another constructor. 

public class Constructor1

{

       Constructor1()

       {

              //this(7f);//error!

              this(5,7f);

       }

       Constructor1(float f)

       {

              System.out.println();

              System.out.println("f="+f);

       }

       Constructor1(int i,float f)

       {

              //System.out.println();//error

              this(f);

              System.out.println("i="+i);

              System.out.println("i+f="+(f+i));

       }

       public static void main(String[] args)

       {

              Constructor1 object1=new Constructor1();

       }

}

/**

this代表"这个对象",而super代表"这个对象"的超类。

 

在一个构造方法中只能调用一次其他的构造方法。并且调用构造方法的语句是第一条语句。

*/