java io正确读取
写入
public static void Writer(String value) {
try{
File file2 = new File("F:\\countDB.txt");
if(!file2.exists()){
file2.createNewFile();
}
FileOutputStream writer = new FileOutputStream(file2,true);
OutputStreamWriter rp = new OutputStreamWriter(writer,"GBK");
BufferedWriter tmpBR = new BufferedWriter(rp,1024*1024);
tmpBR.write(value+"\r\n");
tmpBR.flush();
tmpBR.close();
rp.flush();
rp.close();
writer.flush();
writer.close();
}catch(Exception ex){
//ex.fillInStackTrace();
}
}
查询
File file = new File("E:\\DB.txt");
FileInputStream read = new FileInputStream(file);
InputStreamReader rp = new InputStreamReader(read,"GBK");
BufferedReader tmpBR = new BufferedReader(rp,1024*1024);
String tmpLine = tmpBR.readLine();
while (tmpLine != null) {
&n
相关文档：
代码如下：
1 String command = " cmd /c C:/Program Files/MySQL/MySQL Server 5.0/bin>mysqldump -h localhost -u root -p aijia > E:/aijia.dmp " ;
2 try {
3 Process process& ......
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1。使用java.util.Properties类的load()方法
示例： InputStream in = lnew BufferedInputStream(new FileInputStream(name));
Properties p = new Properties();
p.load(in);
2。使用java.util.ResourceBundle类的getBundle()方法
示例： ResourceBundle rb = ResourceBundle.getBundle(name, Locale.getDefault());
......
package com.joe;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Test
{
//将字符串的数字字符输出
public static void main(String[] args)
{
String str = "iu7i8hy4j ......
