Java读取配置文件

import java.io.IOException;
import java.util.Properties;

public class PropertyUtil {
	private static Properties properties=null;
	public static void init(){
		properties=new Properties();
		try {
			properties.load(PropertyUtil.class.getClassLoader().getResourceAsStream("init.properties"));
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	public static String getProperties(String key){
		if(properties==null){
			init();
		}
		return properties.getProperty(key);
	}
	
}