ggzeng

//com.google.common.collect.ImmutableMap
Map<String, ArrayList<String>> map1 = ImmutableMap.of("list", new ArrayList<>());
Map<String, Integer> map2 = ImmutableMap.<String, Integer>builder().put("key1", 1).put("key2", 2).build();

ggzeng

import javax.mail.*;  
import javax.mail.internet.*;  
import java.util.*;  

public void postMail( String recipients[ ], String subject, String message , String from) throws MessagingException  
{  
    boolean debug = false;  

     //Set the host smtp address  
     Properties props = new Properties();  

ggzeng

import java.util.zip.*;  
import java.io.*;  
/**
 * Java学习交流QQ群：589809992 我们一起学Java！
 */
public class ZipIt {  
    public static void main(String args[]) throws IOException {  
        if (args.length < 2) {  
            System.err.println("usage: java ZipIt Zip.zip file1 file2 file3");  
            System.exit(-1);  

ggzeng

import java.awt.Dimension;  
import java.awt.Rectangle;  
import java.awt.Robot;  
import java.awt.Toolkit;  
import java.awt.image.BufferedImage;  
import javax.imageio.ImageIO;  
import java.io.File;  

...  

ggzeng

private void createThumbnail(String filename, int thumbWidth, int thumbHeight, int quality, String outFilename)  
        throws InterruptedException, FileNotFoundException, IOException  
    {  
        // load image from filename  
        Image image = Toolkit.getDefaultToolkit().getImage(filename);  
        MediaTracker mediaTracker = new MediaTracker(new Container());  
        mediaTracker.addImage(image, 0);  
        mediaTracker.waitForID(0);  
        // use this to test for errors at this point: System.out.println(mediaTracker.isErrorAny());  

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public static void fileCopy( File in, File out )  
            throws IOException  
    {  
        FileChannel inChannel = new FileInputStream( in ).getChannel();  
        FileChannel outChannel = new FileOutputStream( out ).getChannel();  
        try 
        {  
//          inChannel.transferTo(0, inChannel.size(), outChannel);      // original -- apparently has trouble copying large files on Windows  

            // magic number for Windows, 64Mb - 32Kb)  

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BufferedWriter out = null;  
try {  
    out = new BufferedWriter(new FileWriter(”filename”, true));  
    out.write(”aString”);  
} catch (IOException e) {  
    // error processing code  
} finally {  
    if (out != null) {  
        out.close();  
    }  

ggzeng

// 拷贝List
resps = BeanConverterUtil.copyList(EduExamPapers, EduExamPaperResp.class);

ggzeng

package main

import (
	"database/sql"
	"encoding/json"
	"fmt"

	_ "github.com/go-sql-driver/mysql"
)

ggzeng

#include<stdio.h>
#define MAX 100000
typedef struct
{
    int arr[MAX];
}NUMBER;

/* 读取数字字符串，并转为int数组保存 */
void read(NUMBER *add_num)
{