multiple catch

Poplarhttp://baiy.cn　When I started writing "C + + coding specifications and guidance" a few years ago, I planned to add an article to discuss the C + + exception mechanism. I did not expect a few years after the opportunity to finish the tail:-).or

What is an exceptionWhen the program runs, unexpected events occur that prevent the program from executing as expected by the programmer, which is an exception. When the exception occurs, is any program to fend for itself, immediately quit

The Java exception handling mechanism relies mainly on try,catch,finally,throw,throws five keywords. The   try keyword is immediately followed by a block of code enclosed in curly braces, called the try block. Similarly: The following is also known

Select the question (a total of 50 questions, each topic 1.5 points, a total of 75 points. The choice of multiple choice or wrong is not scored. )1. The following belong to the object-oriented feature (C,D). (Two items found)A) overloadingB)

Java7 enhanced Try statement to close resourcesTraditional way to close resources? 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647 import java.io.FileInputStream;import

One: Cause(1) recently in the Java Processing analysis of various data, encountered some anomalies, such as the parse () exception parseexception,valueof () numberformatexception IllegalArgumentException abnormalities, nullpointerexcetion

Opening1. Exception handling (Exception handling):is a kind of mechanism to solve this problem, can better deal with the situation that the program can't run normally.2. Exceptions (Exception):is an error that may occur at run time that causes the

First, Exception introduction 1. Exception: During the operation of the program, there are some unexpected situations that cause the program to exit. 2. An exception is represented by an object, and all exceptions are directly or indirectly

AbnormalAn exception is a run-time error that occurs when a program begins execution.1 Check Exception: The most representative of the inspection exception is the user error or the problem caused by the exception, which is not foreseen by the

Brief introductionException handling is one of the most important features of the Java language, as explained in the article "Three rules for effective Exception handling": It mainly helps us to solve the following three problems in the debug

The Java exception mechanism relies primarily on try,catch,finally,throw,throws five keywords, where the try keyword is followed by a curly brace (not omitted, even if there is only one line of code), where the code that might throw the exception is

1, Exceptions-OverviewException: This is when the program is running in an unhealthy situation.The origin of the anomaly: The problem is also a concrete thing in real life,It can also be described in the form of a Java class and encapsulated as an

[Java Exceptions]The base class for all exceptions and errors in 1.java is throwable** throwable** error exception* (check-in exception) (Runtime exception) * * Exceptions in 2.java are divided into runtime exceptions and check-in exceptions. *

Although Java's built-in exceptions handle most common errors, you might want to create your own exception types to handle the special situations you apply. This is very simple: just define a subclass of exception (exception is of course a subclass

The Java.io package provides the Randomaccessfile class for creating and accessing random files. With this class, you can jump to and read data from anywhere in the file. A program can insert data into a random file without destroying other data for

As mentioned before, usually you want the main thread to end. In the previous example, this is done by calling sleep () in main (), after a long enough delay to ensure that all child threads end before the main thread. However, this is not a

Select the question (a total of 50 questions, each topic 1.5 points, a total of 75 points. The choice of multiple choice or wrong is not scored. )1. The following belong to the object-oriented feature (C,D). (Two items found)A) overloadingB)

An exception is an event that occurs when a program executes, and it interrupts the normal flow of instructions. Java provides a unique mechanism for handling exceptions that are handled by exceptions to the errors that occur in the design of the

Exception handling:1. Exceptions : Problems arising during the execution of the program.Three kinds of exceptions: ① Check for exceptions: Also known as checdked or abnormal. This is usually a user error or a problem that cannot be foreseen by the

In standard package Java.lang, Java defines a number of exception classes. Some of the previous examples have been used. These exceptions are generally subclasses of the standard class runtimeexception. Since Java.lang is actually introduced by all