java Io 配置文件Properties练习

package quickstart;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;

/**
 * Created by patkritLee on 2017/3/22.
 */
public class RunCount {
    public static void main(String[] args) throws IOException{
        Properties prop = new Properties();
        File file = new File("count.ini");
        if(!file.exists())
            file.createNewFile();

        FileInputStream fis = new FileInputStream(file);
        prop.load(fis);
        int count = 0;
        String value = prop.getProperty("time");
        if(value!=null){
            count = Integer.parseInt(value);
            if(count>=5){
                System.out.println("您好，使用次数已到！");
                return;
            }
        }
        count++;
        prop.setProperty("time",count+"");
        FileOutputStream fos = new FileOutputStream(file);
        prop.store(fos,"");
        fos.close();
        fis.close();
    }
}