public void myMethod() throws IOException, SQLException { // 方法体 } 在这个例子中,myMethod方法可能会抛出IOException或SQLException。 2. 提供一个示例代码,演示如何在Java方法中抛出多个异常 以下是一个示例代码,演示了如何在Java方法中抛出多个异常: java public class MultipleExceptionsDemo { public void m...
public static void main(String[] args) throws Exception { getClipboard(); // throws an UnsupportedFlavorException initIOActivity(); // throw an IOException } 1. 2. 3. 4. 5. 我不知道你真正需要知道什么,但也许这会有所帮助。 虽然你的帖子^^已经过了很多时间 问候 答案10 :(得分:0) Pi带着...
Another improvement is done in Compiler analysis of rethrown exceptions. Java rethrow exception allows you to specify more specific exception types in the throws clause of a method declaration. Let’s see this with a small example: package com.journaldev.util; public class Java7MultipleExceptions {...
你同样可以使用Java7的新功能,像one catch block for multiple exceptions 和 automatic resource management以移除重复项。6 将检查型异常转为运行时异常这是在像Spring之类的多数框架中用来限制使用检查型异常的技术之一,大部分出自于JDBC的检查型异常,都被包装进 DataAccessException中,而(DataAccessException)异常...
publicclassMultipleExceptionExample{publicstaticvoidmain(String[] args){try{int[] numbers = {1,2,3}; System.out.println(numbers[4]);// Throws ArrayIndexOutOfBoundsExceptionintresult =10/0;// This line is never reached}catch(ArrayIndexOutOfBoundsException e) { ...
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...
如果在try块中发生异常,它被抛出。你的代码可以捕捉这个异常(用catch)并且用某种合理的方法处理该异常。系统产生的异常被Java运行时系统自动引发。手动引发一个异常,用关键字throw。任何被引发方法的异常都必须通过throws子句定义。任何在方法返回前绝对被执行的代码被放置在finally块中。
publicvoiddoSomething(Stringinput)throwsMyBusinessException{ 8 ... 9 } 4. Throw Exceptions With Descriptive Messages The idea behind this best practice is similar to the two previous ones. But this time, you don’t provide the information to the caller of your method. The exception’s message...
Document the exceptions using Javadoc Whenever method throws any exception, its better to document its details using@throw annotationof Javadoc Clear documentation of Exceptionthrown by any method provides complete idea of exception to anyone who is using it. ...
只要你不过度使用检查型异常,你可以***限度的减少这类情况,这样做的结果是你会得到更清洁的代码。你同样可以使用Java7的新功能,像one catch block for multiple exceptions 和 automatic resource management以移除重复项。 6.将检查型异常转为运行时异常