編寫2個接口：InterfaceA和InterfaceB；在接口InterfaceA中有個方法void printCapitalLetter()；在接口InterfaceB中有個方法void printLowercaseLetter()；然 后寫一個類Print實現接口InterfaceA和InterfaceB，最后再在主類E 的main方法中創建Print的對象並賦值，運行方法

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();
    
    
}
    

}