异常恢复模型

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终止与恢复

在Java异常中有两种机制

一种是终止模型一种是恢复模型

用while循环建立恢复模型不断重复直到不再出现异常

public class Ex5 {private static int[] ia = new int[2];static int x = 5;public static void main(String[] args) {while(true) {try {ia[x] = 1;System.out.println(ia[x]);break;} catch(ArrayIndexOutOfBoundsException e) {System.err.println("Caught ArrayIndexOutOfBoundsException");e.printStackTrace();x--;} finally {System.out.println("Are we done yet?");}}System.out.println("Now, we're done.");}}

结果：

Caught ArrayIndexOutOfBoundsExceptionAre we done yet?Are we done yet?java.lang.ArrayIndexOutOfBoundsException: 5at my.test.Ex5.main(Ex5.java:9)Caught ArrayIndexOutOfBoundsExceptionjava.lang.ArrayIndexOutOfBoundsException: 4at my.test.Ex5.main(Ex5.java:9)Caught ArrayIndexOutOfBoundsExceptionjava.lang.ArrayIndexOutOfBoundsException: 3at my.test.Ex5.main(Ex5.java:9)Are we done yet?Caught ArrayIndexOutOfBoundsExceptionjava.lang.ArrayIndexOutOfBoundsException: 2at my.test.Ex5.main(Ex5.java:9)Are we done yet?1Are we done yet?Now, we're done.