package lianxi;

public interface InterfaceA {

    void printCapitalLetter();

}

package lianxi;

public interface InterfaceB {

    void printLowercaseLetter();

}

package lianxi;

public class Print1 implements InterfaceA, InterfaceB {

    @Override

    public void printLowercaseLetter() {

        for (int i = 97; i < 123; i++) {

            System.out.print((char)i);

        }

           System.out.println();

    }

    @Override

    public void printCapitalLetter() {

        for (int i =65; i < 91; i++) {

            System.out.print((char)i);

        }

           System.out.println();

    }

}

package lianxi;

public class E {

public static void main(String[] args) {

     InterfaceA a=new Print1();

     InterfaceB b=new Print1();

     a.printCapitalLetter();

     b.printLowercaseLetter();

}

}