存文件

package com.lovo.cunwenjian;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.Properties;

import java.util.Set;

public class Cunwenjian {

public static void main(String[] args) {

// TODO Auto-generated method stub

Properties props = new Properties();

props.setProperty("NOT1", "娜娜");

props.setProperty("NOT2", "二硕");

props.setProperty("NOT3", "贤贤");

props.setProperty("NOT4", "歌哥");

props.setProperty("NOT5", "欧巴");

System.out.println(props.size());

System.out.println("================================");

Set allkey = props.keySet();

for (Object key : allkey) {

System.out.println(key);

System.out.println("================================");

}

System.out.println(props.getProperty("NOT1"));

System.out.println("================================");

try {    props.store(new FileOutputStream("data.properties"), null);

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}