利用Properties类通过IO流统计程序的运行次数

package 计算程序运行次数;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;
import java.util.Scanner;
	
public class Demo {
	private static int count;
	public static void main(String[] args) throws Exception, Exception {
		while(true){//死循环，多次操作显示更加直观，不过需要强行终止 可以在 判断前再次添加判断条件，设置结束方法
		System.out.println("是否需要初始化  y/s");
		String str = (new Scanner(System.in)).next();
		if(str.equals("y")){
			writeFileFirst();
			writeFile();
			readFile();
		}else{
			writeFile();
			readFile();}
		}
	}
	public static void writeFile() throws FileNotFoundException, IOException{//写入文件计算次数
		
		Properties p =  new Properties();
		p.load(new FileInputStream(new File("C:/Users/刘晖/Desktop/计数.txt")));
		count =  Integer.parseInt(p.getProperty("yxcs"));//计数器通过获取原有文件的键值获取上次程序运行的计数
		count++;//本次程序计算加一
		p.setProperty("yxcs", count + "");
		p.store(new FileOutputStream(new File("C:/Users/刘晖/Desktop/计数.txt")), "Snum");	
	}
	public static void readFile() throws FileNotFoundException, IOException{//读取文件获得次数
		Properties p =  new Properties();
		p.load(new FileInputStream(new File("C:/Users/刘晖/Desktop/计数.txt")));
		String str = p.getProperty("yxcs");
		System.out.println("当前运行次数："+str);
	}
public static void writeFileFirst() throws FileNotFoundException, IOException{//初始化作用
		
		Properties p =  new Properties();
		p.setProperty("yxcs", "0");
		p.store(new FileOutputStream(new File("C:/Users/刘晖/Desktop/计数.txt")), "Snum");	
	}
}