try ，finally都抛出异常如何处理．如果try中抛出了异常，在控制权转移到调用栈上一层代码之前， finally 语句块也会执行，如果finally抛出异常，try语句快抛出的那个异常就

package com.github.jdk7;import org.junit.Test;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * try ，finally都抛出异常如何处理．如果try中抛出了异常，在控制权转移到调用栈上一层代码之前， * finally　语句块也会执行，如果finally抛出异常，try语句快抛出的那个异常就丢失了． *  * @author doctor * * @since 2014年12月14日 下午10:54:58 */public class ExceptionalHandling {private static final Logger log = LoggerFactory.getLogger(ExceptionalHandling.class);@Test(expected = ArithmeticException.class)public void test_wrong_way() {try {Integer.parseInt("hello");} catch (NumberFormatException e) {throw e;} finally {try {int a = 10 / 0;} catch (ArithmeticException e) {throw e;}}}/** * 会得到的异常堆栈信息：  * [main] ERROR com.github.jdk7.ExceptionalHandling - * java.lang.NumberFormatException: For input string: "hello" *         at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) ~[na:1.8.0_25] *         ............. *         Suppressed: java.lang.ArithmeticException: / by zero   at com.github.jdk7.ExceptionalHandling.test_right_way(ExceptionalHandling.java:43) ~[classes/:na] */@Test(expected = NumberFormatException.class)public void test_right_way() {RuntimeException throwable = null;try {Integer.parseInt("hello");} catch (NumberFormatException e) {throwable = e;} finally {try {int a = 10 / 0;} catch (ArithmeticException e) {if (throwable == null) {throwable = e;} else {throwable.addSuppressed(e);}}}if (throwable != null) {log.error("", throwable);throw throwable;}}}