代码:
import Java.io.*;
import java.util.Properties;
public class PropertiesDemo {
public static void main(String[] args)
{
String pFilename = System.getProperty("user.dir")
+ System.getProperty("file.separator") + "test.properties"; // 构造文件名
Properties p = new Properties();
try
{
FileInputStream in = new FileInputStream(pFilename); // 构造文件的输入流
p.load(in); // 读入属性
in.close();
}
catch(Exception e)
{
System.out.println("Error of create input stream");
}
System.out.println(p.getProperty("property1"));
p.setProperty("property1","new value"); // 给property1赋新的值
try
{
FileOutputStream out = new FileOutputStream(pFilename);
p.store(out,"This file is a test"); // 设置属性文件的文件头信息
out.flush();
out.close();
}
catch(Exception e)
{
System.out.println("Error of write input stream");
}
}
}