JAVA——38.finally块

练习1。由于异常已被捕获和处理，他仍将执行异常后的代码

package pkg5;public class Test1 {    String x;    public static void main(String[] args) {                Test1 test1=new Test1();        //1        try{                            System.out.println(5/0);    //2        }catch(ArrayIndexOutOfBoundsException e) {//3            test1.x="hello world";                             System.out.println(test1.x.length());        }catch(NullPointerException e) { //4            test1.x="hello world";                             System.out.println(test1.x.length());        }catch(Exception e) { //5            test1.x="hello world";                             e.printStackTrace();//6        }        System.out.println("end");        //}    }}

练习2，finally块：无论如何执行try、catch块，都会执行finally块(如无异常，直接执行try块，如有异常，执行catch块)

package pkg5;public class Test1 {    String x;    public static void main(String[] args) {                Test1 test1=new Test1();        //1        try{                            System.out.println(5/1);    //2        }catch(ArrayIndexOutOfBoundsException e) {//3            test1.x="hello world";                             System.out.println(test1.x.length());        }catch(NullPointerException e) { //4            test1.x="hello world";                             System.out.println(test1.x.length());        }catch(Exception e) { //5                       e.printStackTrace();//6        }finally {            System.out.println("finally");        }        System.out.println("end");//因为异常已经被捕获和处理，因此，他在执行异常代码后仍会执行代码    }}