Java Basic Practice Writing 2 interfaces

Write 2 interfaces:interfacea and interfaceb; in interface interfacea There is a method void in the

Printcapitalletter (); there is a method in interface interfaceb void printlowercaseletter () ; then

Write a class print Implementation interface Interfacea and interfaceb, require print Capitalletter () method

Implements the output uppercase English alphabet function, theprintlowercaseletter () method implements the output lowercase English

The function of the alphabet. Write a main class e, create the Print object in the main method of the primary class e , and assign

The value given to the interfacea variable a, Object a calls print Capitalletter method; Finally again in the main class E

The main method creates the Print object and assigns a value to the variable bof the interfaceb Object b call

Printlowercaseletter method.

 Package Lianxi;  Public Interface interfacea {    void  printcapitalletter ();}

 Package Lianxi;  Public Interface interfaceb {    void  printlowercaseletter ();}

 PackageLianxi; Public classPrintImplementsInterfacea, Interfaceb {@Override Public voidPrintlowercaseletter () {System.out.println ("Lower case Alphabet");  for(CharC= ' a '; c<= ' z '; C + +) {System.out.print (c+" ");    } System.out.println (); } @Override Public voidPrintcapitalletter () {System.out.println ("Capital Table");  for(Charc= ' A '; c<= ' Z '; C + +) {System.out.print (c+" ");        } System.out.println (); }}

 Package Lianxi;  Public class Q {    publicstaticvoid  main (string[] args) {        Print a=new  Print ();        A.printcapitalletter ();        Print b=new  print ();        B.printlowercaseletter ();    }}

Java Basic Practice Writing 2 interfaces