invalid end header( bad central directory size) 异常描述 java.util.zip.ZipException: invalid END header (bad central directory size) at java.util.zip.ZipFile.open(Native Method) at java.util.zip.ZipFile.<init>(ZipFile.java:219) at java.util.zip.ZipFile.…

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The ideal time to catch an error is at compile time, before you even try to run the program. However, not all errors can be detected at compile time. To create a robust system, each component must be robust. By providing a consistent error-reporting…

Error Handling with Exceptions The ideal time to catch an error is at compile time, before you even try to run the program. The rest of the problems must be handled at run time through some formality that allows the originator of the error to pass ap…

有一句这样话:一个衡量Java设计师水平和开发团队纪律性的好方法就是读读他们应用程序里的异常处理代码. 本文主要讨论开发Java程序时,如何设计异常处理的代码,如何时抛异常,捕获到了怎么处理,而不是讲异常处理的机制和原理. 在我自己研究Java异常处理之前,我查过很多资料,翻过很多书藉,试过很多搜索引擎,换过很多英文和中文关键字,但是关于异常处理设计的文章实在太少,在我研究完Java异常处理之后,我面试过很多人,也问过很多老员工,极少碰到对Java异常有研究的人,看来研究这个主题的人很少,本文内…

在Java中,异常分为受检查的异常,与运行时异常. 两者都在异常类层次结构中.这类容易出选择题 考试你是否掌握了异常类并清楚哪些异常类必须捕获 下面的图展示了Java异常类的继承关系. 图1 粉红色的是受检查的异常(checked exceptions),其必须被 try{}catch语句块所捕获,或者在方法签名里通过throws子句声明.受检查的异常必须在编译时被捕捉处理,命名为 CHecked Exception 是因为Java编译器要进行检查,Java虚拟机也要进行检查,以确保这个规则得到…

Agenda Three Categories Of Exceptions Exceptions Hierarchy try-catch-finally block The try-with-resources User-defined Exceptions The Throws/Throw Keywords Three Categories Of Exceptions There have various of reasons cause different exceptions during…

The beginning of this chapter introduced the idea of writing code that can be applied as generally as possible. To do this, we need ways to loosen the constraints on the types that our code works with, without losing the benefits of static type check…

reference from:http://www.programcreek.com/2013/10/top-10-questions-about-java-exceptions/ This article summarizes the top 10 frequently asked questions about Java exceptions. 1. Checked vs. Unchecked In brief, checked exceptions must be explicitly c…

// File Name : URLDemo.java import java.net.*; import java.io.*; public class URLDemo { public static void main(String [] args) { try { URL url = new URL("http://www.amrood.com/index.htm?language=en#j2se"); System.out.println("URL is "…