加载属性文件，读取及存储

package ZHANG.API;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.util.Properties;public class PropertiesFile {/** * @param args * @throws IOException * @throws FileNotFoundException */public static void main(String[] args) {Properties settings = new Properties();try {settings.load(new FileInputStream("count.txt"));} catch (FileNotFoundException e) {settings.setProperty("count", String.valueOf(0));e.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}//settings.get("count");int i = Integer.parseInt(settings.getProperty("count"))+1;System.out.println("这是第"+i+"次运行..");//settings.put("count",new Integer(i).toString());settings.setProperty("count", new Integer(i).toString());try {settings.store(new FileOutputStream("count.txt"), "program is use:");} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}