Strings and Variables Inheritance From Another Class in Java

public final class Constants
{
  public static boolean male = false;
  public static boolean female = true;
}

Elsewhere

if (this.isFemale == Constants.female)

You probably want to have a look at enums instead for flags though, they are more flexible and powerful.

I know its popular to use interfaces/base classes to inherit constants, but unless your class is supposed to actually BE a constant, it should never inherit or implement a Constants class/interface. Composition is much more preferred than inheritance in cases like this, you only spend a second typing that extra "Constants." but if you decide to inherit to save those keystrokes you spend the rest of the programs lifetime with an inheritance that shouldn't really be there in the first place.

You want to be able to use these variables from another class? If you want them to be different in the class (eg you can change them in one, but it wouldn't affect another class accessing the variables) then do what skyjlv said.

If you mean you just want to be able to access them from another class then put them in an interface and either implement the interface on the class (So you don't have to do Interface.variable) or just use them directly from the other class by going Interface.variable (This is the more advisable approach)

Like this

public interface Constants {
  public int blah = 1;
  public String foo = "bar";
}

public class bazz implements Constants {

     public bazz() {
        System.out.println(blah); //Prints 1
     }
}

or

public class bazz {
     private int blah = Constants.blah;       

     public bazz() {
        System.out.println(blah); //Prints 1
     }
}

You could create an abstract class which contains all the variables. And then have this class and another class that you're planning to have similar variables both extend the abstract class.