package My;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Properties;

public class PropertiesUtils
{
	static String proPath = "src/my/conf.properties";
	static Properties pro = null;
	static ArrayList<String> list = new ArrayList<String>();
	HashMap<String, String> map = new HashMap();

	static public void ReadProperties()
	{
		pro = new Properties();
		FileInputStream in;
		try
		{
			in = new FileInputStream(proPath);
			pro.load(in);
			in.close();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}

	static public void WriteProperties(String key, String value)
	{
		try
		{
			FileOutputStream oFile = new FileOutputStream(proPath, false);// true表示追加打开
			pro.setProperty(key, value);
			pro.store(oFile, "test");
			oFile.close();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}

	}

	public static void main(String[] args)
	{
		ReadProperties();
		WriteProperties("城市", "洛阳");
	}
}