exceptiondemo.java

java程序设计 清华出版社 孙燮华老师编写的程序源代码

//ExceptionDemo.java
class MyException extends Exception {
  private int detail;
  MyException(int n){
    detail=n;
  }

  public String toString ( ) {
    return "MyException["+detail+"]";
  }
}

class ExceptionDemo {
  static void compute (int n) throws MyException {//throws的用法
    System.out.println("Called compute("+n+")");
    if(n>10) throw new MyException(n);            //throw的用法
    System.out.println("Normal exit.");
  }
  public static void main(String args[ ]){
    try {
      compute(1);
      compute(11);
    }
    catch(MyException e){
      System.out.println("Exception caught "+e);
    }
  }
}