java 读取 property 属性文件的代码

import java.io.FileInputStream;
import java.util.Properties;
public class LoadPropertiesTest {
private Properties prop = null;
LoadPropertiesTest() {
prop = new Properties();
}
public void load(String path) {
FileInputStream stream = null;
try {
stream = new FileInputStream(path);
prop.load(stream);
stream.close();
stream = null;
} catch (Exception e) {
e.printStackTrace();
}
}
public String getProperty(String key) {
return prop.getProperty(key);
}

public static void main(String args[]){
LoadPropertiesTest imp = new LoadPropertiesTest();
imp.load("100.properties");
System.out.println(imp.getProperty("ip"));
System.out.println(imp.getProperty("username"));
System.out.println(imp.getProperty("password"));
System.out.println(imp.getProperty("filename"));
}
}