再开分，求解~其实很简单的，只需你亲亲一点~！

Question

http://community.csdn.net/Expert/topic/4047/4047968.xml?temp=.832226

Answer 1

public class C
{
     public C()
    {
    }    .......
    ......    public String A(String B) throws IllegalArgumentException
   {
    if(B.indexOf('|')==-1) throw new IllegalArgumentException("");
   
   }   public static void main(String []args)
   {
        C c1=new C();
        String str1="1,2,3";
        String str2;
        try{
         str2=c1.A(str1);          //这里就提示错误
     }catch(IllegalArgumentException e){
    
     //处理错误
     }
   }
}

Answer 2

H:\javafile\20050419\Test.java:11: illegal start of expression
               throws new IllegalArgumentException("Wrong");
               ^
H:\javafile\20050419\Test.java:31: 'void' type not allowed here
               System.out.println(e.printStackTrace());
                                                   ^
2 errors

Answer 3

class Test
{
 private int year;
 private int month;
 private int day;

 public String setDay(int y,int m,int d) throws IllegalArgumentException
     {
          if(d>31)
          {
               throws new IllegalArgumentException("Wrong");
          }
          year=y;
          month=m;
          day=d;
          String s=String.valueOf(year)+'-'+String.valueOf(month)+'-'+String.valueOf(day);
          return s;
        
     } 

     public static void main(String []args)
     {
        Test t=new Test();
        String s;
          try
          {    
               s=t.setDay(2001,1,100);
          }
          catch(IllegalArgumentException e)
          {
               System.out.println(e.printStackTrace());
          }
          System.out.println(s);
     }
}