multiple catch

************************************************************************* * * * Original:blog.csdn.net/clark_xu Xu Changliang's Column************************************************************************1.1 ExceptionClassThere are throwable

First, what is an exception:Exceptions are problems that occur at run time. Usually described with Exception .In Java, an exception is encapsulated into a class , and when a problem occurs, an exception class object is created and the

Cases: Copy Code code as follows: $a = fopen (' test.txt ', ' R '); There is no decision on the file to open, if the file does not exist will be an error ?> The correct wording should read as follows: Copy Code

example one: exception handling mechanism in/** * java * @author Administrator * * */public class ExceptionDemo1 {public static VO ID Main (string[] args) {System.out.println ("program started"); try{String str = null; * * The JVM found

First, abnormal 1, what is abnormal In Java, when the program is running in the abnormal situation is called an exception, in the form of exception classes to encapsulate these abnormal conditions, through the exception handling mechanism for the

PrefaceTry...catch...finally we often use it in our code, and have always felt that this thing is not very useful. Because in development, we always believe that our code is not error-prone. In this way, the problem comes, once our system has gone

-------Android Training, Java training, look forward to communicating with you! ----------Exceptions are anomalies that occur when the program is compiled and run. The exception is encapsulated by object-oriented programming and described in the

Traditional error handling mechanismThe error is handled by the function return value.The basic idea of exception handling1) The exception handling mechanism of C + + makes exception's throwing and exception handling unnecessary in the same function,

Common javascript error object processing, Error code set error object Property: Name: Error name Number: error number Description: description Message: error message, which is the same as description. FF Only attribute FileName: The file where the

This article mainly introduces PHP Exception Handling analysis. This article focuses on how to capture exceptions and provides code operation examples. For more information, see the following two Exception classes in PHP: Exception and

Exceptions are often used to handle various types of errors encountered during normal program execution. For example, you need to handle database connection failures during database connection. Exceptions can improve the fault tolerance feature of

Exception handling is a very important aspect in program design, and it is also a great difficulty in programming, starting from C, you may already know how to use if...else ... To control the anomaly, perhaps spontaneously, but this control is very

JAva know how much (1) language OverviewJava know how much (2) virtual machine (JVM) and cross-platform principleJava know how much (3) employment directionJava know how much (4) the difference between J2SE, Java EE, J2MEJava know how much (5) Build

This article begins with the basic concepts and syntax of Java exceptions, introduces the basic knowledge of Java exception handling, analyzes the Java anomaly Architecture, compares the exception processing framework of spring, and expounds the

The abstract class of exceptions in Java is Throwable, which is based on the derivation of two main classes: Error and exception.Error is a serious error in the program and should not be included with Try...catch. Javadoc's instructions are as

Ec (2); directory & nbsp; 1. & nbsp; what is an exception & nbsp; 2. d Entry & nbsp; 3. custom exception & nbsp; 4. & nbsp; multiple exceptions & nbsp; 5. throw an exception again & nbsp; 6. & nbsp; Program Stream exceptions & nbsp; 7. & nbsp;

* Exception Precautions:1, when a subclass overrides a parent class method, the method of the parent class throws an exception, and the child class's method can only throw the exception of the parent class or the subclass of the exception.2, if the

Java Exception Handling summaryexception handling is a very important aspect in program design, and it is also a great difficulty in programming, starting from C, you may already know how to use if...else ... To control the anomaly, perhaps

The most basic requirement for program robustness is the processing and capturing of program errors. in ASP. NET, the error processing mechanism is the same as that in other programming languages. You can use Try... Catch... Finally and so on, which

Java has a powerful exception handling mechanism, the recent initial study, the feeling of content is still quite a lot of, hereby to write their own understanding to share with you. First, in Java code, because of the use of the MyEclipse IDE, you