Java

Original link: http://www.cnblogs.com/itliucheng/p/5578788.htmlSome API1. Visit the websiteDriver.get ("http://www.baidu.com");OrDriver.navigate (). to ("http://www.baidu.com");2. Manipulating the browser windownew Point; // declares a dimension

1. About = =The first thing to know is that = = is used to match the contents of the memory unit, is actually a number, the computer is only a number, and in the Java language, when the = = match, is more than two units of memory content is the same.

Enter this snippet code in the URL input box javascript:document.body.contenteditable= ' true ';d ocument.designmode= ' on ';! Msnlda Note When copying and pasting into the URL input box, the code in this paragraph "JavaScript:" This sentence will

First, write a program, the user input two number, to find out its subtraction, and use a message boxDisplays the results of the calculation.1. Design idea: Enter two numbers and operators from the keyboard, and then calculate. The input numbers and

Eight basic types of data in Java: Data type The number of bytes occupied Number of placeholders (binary digits) can represent range Default value Packing class Note Byte (bytes) 1 8

The so-called input stream is to read the data in the fileSimilarly, the character input stream InputStreamReader4 Construction methods, but 2 are more commonly used:Construction Method:　A:inputstreamreader (InputStream is): reads data with default

Heap and Stack in JavaJava divides memory into two types: one is stack memory, and the other is heap memory.1. Stacks and heaps (heap) are places where Java is used to store data in RAM (random access memory). Unlike C + +, Java automatically

Usually to synchronized this key word does not care too much, to it's understanding to stay in a rough turn over the state of Baidu Encyclopedia, Baidu Encyclopedia to its explanation is:"The Java language keyword, which can be used to lock objects

Array subscript out of bounds exceptionlooking at the array of calls or the subscript value of a string is not beyond the range of the array, generally speaking, the display (that is, directly with the constant subscript) call is not easy to make

/*** Recursively read all documents under Folder *@authorAdministrator **/ Public classfileloop{Private StaticList fileList =NewArraylist(); Public Static voidMain (string[] args) {List list = Filereadloop ("C:/dir"); for(inti=0; I)

Package Zuoye;Import Java.io.File;Import Java.io.FileInputStream;Import Java.io.FileOutputStream;public class TEXTRW {public static void Main (string[] args) {File File = new file ("D:/zuoye");if (!file.exists ()){File.mkdirs ();}File F=new file ("D:

2. It is known that there are 16 men's football teams attending the 2008 Beijing Olympic Games. Write a program that divides the 16 teams randomly into 4 groups. Adopt List collection and random number2008 Beijing Olympic Games men's race

3. Write Biniodemo.java Java application, the function of the program is to complete the 1.doc file copy, copy the name of the future file for their own school number name. doc. Try{FileInputStream in=NewFileInputStream ("E:/textrw.txt");

When multiple threads are accessing resources simultaneously, the synchronization mechanism allows only one thread to operate on the resource at the same time. The synchronization mechanism can be implemented with synchronized. When

Object referenceGarbage collection in Java is typically done in the Java heap because almost all of the object instances in Java are stored in the heap. When it comes to garbage collection in the Java heap, it's natural to talk about references.

Server-side program Echoserver.javaImport java.io.*;Import java.net.*;public class Echoserver {private int port=8000;Private ServerSocket serversocket;Public Echoserver () throws IOException {ServerSocket = new ServerSocket (port);System.out.println

This article introduces a simple tool class for file operations, including folder creation, folder deletion, file creation, file renaming, file copying, and file Deletion. If you need to copy a folder, you are actually creating the folder and

Requirements: we want to implement multi-threaded Program.How to achieve it?Because threads are dependent on processes, we should create a process First.And the process is created by the system, so we should go to invoke the system function to

Enum: commonly used to represent a set of constants of the same class Type. The benefits of using constants for these properties are obvious, not only to guarantee a singleton, but also to replace equals with "= =" when compared, and the values

Database creation, adding and deleting fields, creating forms, filtering (personal notes) not detailed, field formsLogin Name: SYS password: 123456 Database: SESYSBDA2. you are not authorized to log on to the system. assign permissions 4. login 5.