示例程序1
public class EmbededFinally { public static void main(String args[]) { int result; try { System.out.println("in Level 1"); try { System.out.println("in Level 2");
// result=100/0; //Level 2 try { System.out.println("in Level 3"); result=/; //Level 3 } catch (Exception e) { System.out.println("Level 3:" + e.getClass().toString()); } finally { System.out.println("In Level 3 finally"); } // result=100/0; //Level 2 } catch (Exception e) { System.out.println("Level 2:" + e.getClass().toString()); }
finally { System.out.println("In Level 2 finally"); } // result = 100 / 0; //level 1 } catch (Exception e) { System.out.println("Level 1:" + e.getClass().toString()); } finally { System.out.println("In Level 1 finally"); } } }
结果截图
分析
当有多层嵌套的finally时,异常在不同的层次抛出 ,在不同的位置抛出,可能会导致不同的finally语句块执行顺序。
在一些特殊情况下finally语句块不一定会执行
如:
public class SystemExitAndFinally { public static void main(String[] args)
{
try{ System.out.println("in main");
throw new Exception("Exception is thrown in main");
//System.exit(0); }
catch(Exception e)
{
System.out.println(e.getMessage());
System.exit();
}
finally
{
System.out.println("in finally");
}
} }
结果截图