samplethrow.java

java课程的资料以及实验的代码

class SampleThrow {
  static void demoproc() {
    try {
      throw new NullPointerException("demo");
    } catch(NullPointerException e) {
      System.out.println("Demopro中发现错误:" + e);
      throw e; 
    }
  }
  public static void main(String args[]) {
    try {
      demoproc();
    } catch(NullPointerException e) {
      System.out.println("Main函数中发现错误: " + e);
    }  }
}