Interface USB {static final string usbstring = "USB1.1 to low speed ..."; public void showusb ();} interface} interface usbstring = "IEE is taller to ..."; public void showiee (); The first way: Class Extertest IMPLEments USB () {system.out.prinltn (USB.USBString);} public void showie ({system.ustring);}} test Class: public class test {public static void main (string [] args) {EXTERTEST USBCASE = New EXTERTERTEST (); USB USB = USBCase; USB.Showusb (); //usb.showie ();// This is not called . IEE IEEUSB = USBCase; IEEUSB.SHOWIEEEE (); //ieeusb.shwousb();// This cannot be called. }} Second method: (using flag and extension) Interface Multiple Extends USB, IEE {}
class ExterTest implements Multiple {public void showUSB () {System.out.println (USB.USBString);} public void showIEE () {System.out.println (IEE.USBString);}} test class: public class Test {public Static void main (String [] args) {EXTERTEST USBCASE = New EXTERTERTEST (); USB USB = USBCASE; USB.SHOWUSB (); USB.SHOWIEE ();}}
