demonfinally.java

来自「180个针对Java初学者的简单实例,包含了180個適合與初學者的源碼實例」· Java 代码 · 共 47 行

//  使用finally。
//演示finally的用法。
class DemonFinally {
  // Through an exception out of the method.
  static void methodA() {
    try {
      System.out.println("inside methodA");
      throw new RuntimeException("demonstration");
    } 
    finally {
      System.out.println("methodA's finally");
    }
  }

  // Return from within a try block.
  static void methodB() {
    try {
      System.out.println("inside methodB");
      return;
    } 
    finally {
      System.out.println("methodB's finally");
    }
  }

  // Execute a try block normally.
  static void methodC() {
    try {
      System.out.println("inside methodC");
    } 
    finally {
      System.out.println("methodC's finally");
    }
  }

  public static void main(String args[]) {
    try {
      methodA();
    } 
    catch (Exception e) {
      System.out.println("Exception caught");
    }
    methodB();
    methodC();
  }
}