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Note Learning Java2sdk 1.4.0 Java.util has several important interfaces that are listed here as a summary of learning: 1 java.util.Enumeration There are two methods hasmoreelements (), Nextelement (). Use the following methods: Print all elements

The browser//Display object is Jpg,gif canvas with a double buffering, using the scroll bar display, the display area is fixed and can be extended to a pattern displayed according to the canvas size, because canvas is placed in the center location.

This period of time has been looking at Java, to see the place to speak Reflection,classloader,javassist, very excited, Because before using. NET time contact a little bit of reflection, but I see ClassLoader time, simply feel very magical, but the

Upload Package Popeyelin; import java.io.*; import Javax.servlet.ServletInputStream; import javax.servlet.http.HttpServletRequest; public class Transfer_multi { public string[] sourcefile = new string[255];//source filename public String

Asp.net|excel| export Excel 1, generated by the dataset public void Createexcel (DataSet ds,string typeid,string FileName) { HttpResponse resp; resp = page.response; resp. ContentEncoding = System.Text.Encoding.GetEncoding ("GB2312");

Concept recently intends to revisit the Java basics, first put a The only relationship in 1.OOP is what the object's interface is, like a computer vendor. Regardless of the internal structure of the power supply, it is only possible for him to

Iplabel.java import java.net.*; import java.awt.*; import javax.swing.*; public class Iplabel { JFrame frame; JLabel Label1,label2; JPanel Panel; String ip,address; public void GetIP () { Try { inetaddress addr =

The utility class provides precise floating-point operations, including subtraction and rounding, because Java's simple type does not accurately operate on floating-point numbers. The following code: import Java.math.BigDecimal; public

Data | data type | Conversion 1 How do I convert string string to integer int? A. There are two methods: 1). int i = Integer.parseint ([String]); or i = integer.parseint ([string],[int radix]); 2). int i = integer.valueof (my_str).

Error 1, NULL pointer error java.lang.NullPointerException uses a basic Java data type, the value of a variable is either already a default value, and if it is not properly assigned, the program cannot compile, thus using the basic Java data type

Asp+| Program Original author: Rain Morning asp+ Forum List Program---code section -------------------------------------------------------------------------------- "Bigeagle" was posted at Joy asp↑ in 2000-11-13 15:38:57: //////////////////

Recursive red font is, if you do not understand, please contact me qq:20028205 using System; using System.Text; using System.IO; using System.Xml; using System.Xml.XPath; using System.Web; using System.Collections; namespace

mysql| Data | Database This is a library of classes written in vb.net for connecting to MySQL. You can use this class library to manipulate the MySQL database directly. Before using this class library, you must install theODBC MYSQL 3.51 download

Encryption | decryption [DllImport ("Des64.dll")]private static extern void B64_des (StringBuilder in_str, StringBuilder out_str, string key, int lenth, uint option);The first parameter is the string you want to decrypt, the second argument is the

sql| statement Static public void Insert_sql (string tablename,hashtable param_employeefield,string connstring)   {   //system.web.httpcontext.current.response.write ("xxx");    Hashtable ht_field=new Hashtable ();    Ht_field=getfieldtype

　　1> today a friend asked a question: There is no error in reading pictures, documents, and other file paths with the file control, but when reading a video file (such as RMVB, etc.), the page cannot display an error. The code snippet is as follows:

Vote | Show A voting function module is to view the results of the poll, with a progress bar to show that the results of each poll can have a clear effect. Here are my methods, please do not hesitate to enlighten us: 1: Make a picture for making

/** FileName: Zol.java Description: Automatic in Zhongguancun second-hand market submission of information procedures Author: Ci Qin Qiang email:cqq1978@gmail.com **/ import java.io.*; import java.net.*; class Zol { public

XML PHP Code:-------------------------------------------------------------------------------- ? /** * Lightweight XML document Generation Class (non-DOM) * Author:q3boy * version:v0.1 Aplha * UPDATE:2003/9/8 * Support

Rss|web Web2.0 is a blog,wike,tag,rss and other technologies as the representative of the new generation of personalized-centric Internet model, RSS than blog and other nouns seem not too hot. But open the page is still all over the rss,xml and