Java开发网 - 请问一个关于构造方法之间调用的问题

Topic: 请问一个关于构造方法之间调用的问题

1.请问一个关于构造方法之间调用的问题

Posted by: 2352439
Posted on: 2005-04-15 02:02

我是个JAVA新手，请问各位大虾们：下面的代码到底是哪出错了

class person
{
  private int age;
  private String name;
void shout()
{
system.out.println(name+"'s age is"+age);
}
  public person()
  {
    System.out.println("wo hao ben");
  }
  public person(String name)
  {
    this.name=name;
  }
  public person(String name,int age)
  {
    //this.name=name;
    this.age=age;
    this(name);
  }
  public static void main(String[] args)
  {
    person p1=new person("wangwu");
    person p2=new person("zhanglu",50);
    person p3=new person();
    p1.shout();
    p2.shout();
    p3.shout();
  }
}

编译时出现这样的错误：
D:\javawork\lesson3>javac lesson43.java
lesson43.java:21: call to this must be first statement in constructor
this(name);
^
1 error

2.Re:请问一个关于构造方法之间调用的问题 [Re: 2352439]	Copy to clipboard
Posted by: 2352439 Posted on: 2005-04-15 02:11 跪求答案呀！！！！哪位好心的可怜可怜我呀为了学JAVA，我考试都没时间复习了

3.Re:请问一个关于构造方法之间调用的问题 [Re: 2352439]	Copy to clipboard
Posted by: why Posted on: 2005-04-15 03:11 lesson43.java:21: call to this must be first statement in constructor this(name); public person(String name,int age) { this(name); // make this constructor call the first statement!!! //this.name=name; this.age=age; } BTW, "class person" should have used "class Person", by convention. In fact, it should be "public class Person"

4.Re:请问一个关于构造方法之间调用的问题 [Re: 2352439]	Copy to clipboard
Posted by: 2352439 Posted on: 2005-04-15 11:05 谢谢这位大哥，我等了一夜，终于有结果了