public String checkIpAddress(HttpServletRequest request) { String ip = request.getHeader("x-forwarded-for"); if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHead

/** * Creates the request "https://www.mycallaccount.com/ot/triggerID1.asp". * Customer didn't provide public API for this service. Used Fiddler2 to * grab data and emulate request through browser * *

public class NetworkCheck { /** * 网络是否可用 */ public static boolean isNetworkAvailable(Context context) { ConnectivityManager connectivity = (ConnectivityManager) context .getSystemService(Context.CONNE

Bitmap bitmapOrg = BitmapFactory.decodeResource(this.getContext().getResources(), R.drawable.moon); Matrix matrix = new Matrix(); matrix.postRotate(-40); Bitmap resizedBitmap = Bitmap.createBitmap(bit

1. 通过FileInputStream读取文件输入流 public void export(String excelPath, String fileName) throws Exception{                  //将文件存到指定位置         //读取目标文件流，转换调用下载         File resultFile = new File(excelPath);

public class GradientDescent { public static void main(String[] args) { double x = 3; double y = pow(x);// loss函数 while ((y = pow(x)) > 0.01) { double d = div(x);//求偏导 x = x - 0.01 * d;//下降更新 System.o

println(System.getProperty("java.version")); System.out.println(System.getProperty("java.vendor")); System.out

import java.awt.BorderLayout; import java.awt.Button; import java.awt.Frame; import java.awt.Panel; import

下面是20个非常有用的Java程序片段，希望能对你有用。 1. 字符串有整型的相互转换 String a = String.valueOf(2); //integer to numeric string

代码描述：基于JAVA每月运势api调用代码实例 接口地址：http://www.juhe.cn/docs/api/id/58 import java.io.BufferedReader; import

使用 java.awt.Graphics2D 画线，需要使用Line2D.Float方法，该方法的四个参数分别为起点的坐标x，y和终点的坐标x，y import java.awt.Graphics; import

import java.io.File; import java.io.IOException; import java.io.RandomAccessFile; import java.net.HttpURLConnection;

java Gzip压缩实现代码 import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io

基于CXF的WebService服务端代码 ESBServiceSoap.java package com.esb.services.commservices; import javax.jws.WebMethod;

本类对Query语句进行URL编码 * 键值对中间用=连接 * 不同的键值对用&连接 */ import java.net.URLEncoder; public class QueryString { private

import java.io.IOException; import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException;

50 8 8 Main.java ~ 112B import panel.MainUI; public class Main {

open; import java.io.*; import java.net.URL; import java.util.logging.Level; import java.util.logging

jp/projects/qrcode/） java二维码 生成二维码 QRCodeEncoderHandler.java import java.awt.Color; import java.awt.Graphics2D;

Game_Box.java //方块类 public class Game_Box{ static int[][] pattern = { { 0x0f00, 0x4444, 0x0f00, 0x4444