...: 一条try语句可能具有多个except子句,以指定不同异常的处理程序。...处理程序仅处理在相应的try子句中发生的异常,而不处理同一try语句的其他处理程序中的异常。...相关链接: [一行捕获多个异常] https://stackoverflow.com/questions/6470428/catch-multiple-exceptions-in-one-line-except-block...
If a catch block handles multiple exceptions, you can separate them using a pipe (|) and in this case, exception parameter (ex) is final, so you can’t change it. The byte code generated by this feature is smaller and reduce code redundancy. Another improvement is done in Compiler analys...
1.检查型异常 (Checked exceptions):从 Exception 类继承的异常都是检查型异常(checked exceptions),客户端必须处理API抛出的这类异常,通过catch子句捕获或是通过throws子句继续抛出(forwarding it outward)。 2.非检查型异常 (Unchecked exceptions):RuntimeException 也是 Exception 的子类,然而,从RuntimeException 继承...
Thread thread1=newThread(){@Overridepublicvoidrun(){while(true){if(Thread.currentThread().isInterrupted()){System.out.println("Interruted!");break;}Thread.yield();try{TimeUnit.SECONDS.sleep(10);}catch(InterruptedException e){e.printStackTrace();}System.out.println("thread1==");}}};thread1...
} catch (NullPointerException npe) { // ... } 1. 2. 3. 4. 5. 6. 7. 备选方案1:异常A是由异常B引起的您可以使用cause-constructor 嵌套例外来执行以下操作: try { Exception ex1 = new NullPointerException(); // Throw an IllegalArgumentException that "wraps" ex1 ...
本资料包系统性地探讨了Java编程语言中程序流程控制的核心机制,重点解析了条件判断语句(if-else、switch)和循环结构(while、do-while、for)的语法、特性及应用。通过对不同控制结构在解决实际问题(如实现猜数字游戏、打印九九乘法表、数据...
Similarly, only this class or one of its subclasses can be the argument type in a catch clause. For the purposes of compile-time checking of exceptions, Throwable and any subclass of Throwable that is not also a subclass of either RuntimeException or Error are regarded as checked exceptions....
通过Java 7 的多重捕获机制,你可以使用“或”将不同类型的异常组合起来,只需要一行 catch 语句: // exceptions/MultiCatch.java public class MultiCatch { void x() throws Except1, Except2, Except3, Except4 {} void process() {} void f() { ...
Java:有关try、catch和finally的学习 在看到书本的时候对finally的介绍是:不论是否在try块中产生异常,都会执行finally。当时对这句话的理解不够深,误以为在try...catch的结构中finally会必定执行。当时我产生一个疑问:catch已经对异常进行处理了,那后面的语句势必会执行,无论是否有finally。为此我还做了个小程序来...
Bug fixes and any other changes are listed below in date order, most current BPR first. Note that bug fixes in previous BPR are also included in the current BPR. To determine the version of your JDK software, use the following command: java -version Changes in Java SE 8u20 b32 Bug ...