java简单读取properties文件

/**
*
*/
package app;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Properties;
import app.util.Constants;
/**
* @author tj
*
*/
public class PropReader {
/**
* @param args
*/
public static void main(String[] args) {
File propFile = new File("temp.properties");
Properties prop = new Properties();
try {
prop.load(new FileInputStream(propFile));
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println(prop.getProperty(Constants.no1));
System.out.println(prop.getProperty(Constants.no2));
System.out.println(prop.getProperty(Constants.no3));
}
}

/**
*
*/
package app.util;
/**
* @author tj
*
*/
public interface Constants {
String no1 = "no1";
String no2 = "no2";
String no3 = "no3";
}