How do i hide the password in my jdbc connection?

Question

I just want to ask how to hide my password in my jdbc connection because when someone decompile my class and read my code, he can change the content of my database. I want to know the steps behind it.
my code goes like this
DriverManager.getConnection("jdbc:mysql://localhost/fruits", "admin", "3xmrk");

Answer 1

i opened a notepad and write my jdbc properties and save it as database.properties.
and i tried to test it with the following code but i get a null pointer exception... is my way of creating .properties file is wrong??
import java.util.*;
import java.io.*;
public class Testing2
     public Testing2()
          Properties props = new Properties();
          try
               InputStream in = getClass().getResourceAsStream("database.properties);
               if (in == null)
                    throw new NullPointerException("Could not find database.properties");
               props.load(in);
          catch (IOException e)
               throw new RuntimeException(
                    "Error loading dbservices.properties from classpath.", e);
          String dbUrl_ = props.getProperty("dbUrl");
          String dbLogin_ = props.getProperty("dbLogin");
          String dbPassword_ = props.getProperty("dbPassword");
     public static void main(String args[])
          new Testing2();
}