java读取properties文件的方法

本文实例讲述了java读取properties文件的方法。分享给大家供大家参考。具体实现方法如下：

package com.test.demo; 
import java.util.Properties;   
import java.io.InputStream;   
import java.io.IOException;   
   
public final class TestProperties {   
  private static String param1;   
  private static String param2;  
  private static String param3; 
  private static String param4; 
   
  static {   
    Properties prop = new Properties();   
    //InputStream in = Object.class.getResourceAsStream("/test.properties");
    // 文件在src下 
    //InputStream in = TestProperties.class.getClassLoader().getResourceAsStream("jdbc.properties");
    // 文件在src下 
    InputStream in = TestProperties.class.getResourceAsStream("jdbc.properties");
    //文件在同一个包下 
    try {   
      prop.load(in);   
      param1 = prop.getProperty("mysql.driverClassName").trim();   
      param2 = prop.getProperty("mysql.url").trim();  
      param3 = prop.getProperty("mysql.username").trim();  
      param4 = prop.getProperty("mysql.password").trim();  
    } catch (IOException e) {   
      e.printStackTrace();   
    }   
  }   
     
  private TestProperties() {   
  }   
  public static String getParam1() {   
    return param1;   
  }   
  public static String getParam2() {   
    return param2;   
  }   
  public static String getParam3() { 
    return param3; 
  } 
  public static String getParam4() { 
    return param4; 
  } 
  public static void main(String args[]){   
    System.out.println(getParam1());   
    System.out.println(getParam2());  
    System.out.println(getParam3()); 
    System.out.println(getParam4()); 
  }   
}

希望本文所述对大家的java程序设计有所帮助。