error_3.java

Java异常

//产生一个错误：
/*
import javax.swing.JOptionPane;
class Error_3{
	public static void main(String args[])
	{
	  int number1;
	  int number2;
	  
	  number1=Integer.parseInt(JOptionPane.showInputDialog("输入第一个数："));
	  number2=Integer.parseInt(JOptionPane.showInputDialog("输入第二个数："));
	  	
	  JOptionPane.showMessageDialog(null,number1+"divided by"+number2+"is"+number1/number2);
	  JOptionPane.showMessageDialog(null,"谢谢使用我得程序！");
	  
	  System.exit(0);
	
	}
}

*/

import javax.swing.JOptionPane;
class Error_3{
	public static void main(String args[])
	{
	  int number1;
	  int number2;
	  
	  number1=Integer.parseInt(JOptionPane.showInputDialog("输入第一个数："));
	  number2=Integer.parseInt(JOptionPane.showInputDialog("输入第二个数："));
	  	
	  try{
	  	JOptionPane.showMessageDialog
	  	    (null,number1+"divided by"+
	  	     number2+"is"+
	  	     number1/number2);
	 }                                             //end of  try
	 catch(Exception e)
	 {
	 	//if(e.getMessage().equals("/ by zero"))
	 	JOptionPane.showMessageDialog(null,"天哪，不能被0除！！！");
	 }                                             //end of catch
	 
	 finally{
	 	JOptionPane.showMessageDialog(null,"谢谢使用我得程序！");
	    System.exit(0);}
	 }
}


/*
//还有许多异常：
1、IOException
2、ArrayIndexOutOfBoundsException
3、ClassNotFoundException
4、InterruptedException
*/