JAVA 7种方法获取Properties的值

package com.lpc.util;

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
import com.sun.jmx.defaults.JmxProperties;
import com.sun.org.apache.commons.beanutils.locale.LocaleBeanUtils;

/**
 * 7种方法获取Properties的值  
 * @author kakax
 * @date 2012-06-25
 * @version 1.0
 */
public class PropertiesUtil {
 
 /**
  * 1、使用java.util.Properties 类的load()方法 
  * @param url
  */
    public static Properties getProperties_1(String url) throws IOException {
       InputStream in = new BufferedInputStream(new FileInputStream(url)); 
       Properties p = new Properties (); 
       p.load(in); 
       return p;
    }
    
    
    /**
     * 2、使用java.util.ResourceBundle类的getBundle()方法
     * @param url
     * @return
     */
    public static ResourceBundle getProperties_2(String url) {
        ResourceBundle rb = ResourceBundle.getBundle(url, LocaleBeanUtils.getDefaultLocale()); 
        return rb;
        //rb.getString(key)
     }
    
    /**
     * 3、使用java.util.PropertyResourceBundle类的构造函数 
     * @param url
     * @return
     * @throws IOException
     */
    public static ResourceBundle getProperties_3(String url) throws IOException {
        InputStream in = new BufferedInputStream(new FileInputStream(url)); 
        ResourceBundle rb = new PropertyResourceBundle(in); 
        return rb;
     }
    
    /**
     * 4、使用class变量的getResourceAsStream()方法 
     * @param url
     * @return
     * @throws IOException
     */
    public static Properties getProperties_4(String url) throws IOException {
        InputStream in = JmxProperties.class.getResourceAsStream(url); 
        Properties p = new Properties (); 
        p.load(in);
        return p;
     }

    /**
     * 5、使用class.getClassLoader()所得到的java.lang.ClassLoader的getResourceAsStream()方法 
     * @param url
     * @return
     * @throws IOException
     */
    public static Properties getProperties_5(String url) throws IOException {
        InputStream in = JmxProperties.class.getClassLoader().getResourceAsStream(url); 
        Properties p = new Properties (); 
        p.load(in); 
        return p;
     }
    
    /**
     * 6、使用java.lang.ClassLoader类的getSystemResourceAsStream()静态方法 
     * @param url
     * @return
     * @throws IOException
     */
    public static Properties getProperties_6(String url) throws IOException {
        InputStream in = ClassLoader.getSystemResourceAsStream(url); 
        Properties p = new Properties (); 
        p.load(in); 
        return p;
     }
    
    //  补充 
    //  Servlet中可以使用javax.servlet.ServletContext的getResourceAsStream()方法 
    //  示例：
    //  public static Properties getProperties_8(String url) {
    //  InputStream in = context.getResourceAsStream(url); 
    //  Properties p = new Properties (); 
    //  p.load(in); 
    //  }

}