This lab is a small demonstration of how interfaces work. Type up the code and submit the results. CODE public class InterfaceExample { public static void main(String[] args) { DemoClass myObj= new DemoClass(); myObj.myMethod(); myObj.myOtherMethod(); } public interface InterfaceOne { public void myMethod(); // interface method public interface Interface Two { public void myOtherMethod(); // interface method public class DemoClass implements InterfaceOne, Interface Two { public void myMethod() { System.out.println("Some text.."); } public void myOtherMethod() { System.out.println("Some other text..."); }

This lab is a small demonstration of how interfaces work. Type up the code and submit the results. CODE public class InterfaceExample { public static void main(String[] args) { DemoClass myObj= new DemoClass(); myObj.myMethod(); myObj.myOtherMethod(); } public interface InterfaceOne { public void myMethod(); // interface method public interface Interface Two { public void myOtherMethod(); // interface method public class DemoClass implements InterfaceOne, Interface Two { public void myMethod() { System.out.println("Some text.."); } public void myOtherMethod() { System.out.println("Some other text..."); }

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Interface
This lab is a small demonstration of how interfaces work. Type up the code and submit
the results.
CODE
public class InterfaceExample {
public static void main(String[] args) {
DemoClass myObj = new DemoClass();
myObj.myMethod();
myObj.myOtherMethod();
}
public interface InterfaceOne {
public void myMethod(); // interface method
}
public interface Interface Two {
public void myOtherMethod(); // interface method
}
public class DemoClass implements InterfaceOne, Interface Two {
public void myMethod() {
System.out.println("Some text..");
}
public void myOtherMethod() {
System.out.println("Some other text...");
}

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Why must you implement all interface methods?
Consider the following interface and class definitions: public interface A { public void m1(); public void m2(); } public interface B { public void m3(); } public interface C extends B { public void m1(); public void m2(); public void m4(); } public class X implements B { public void m3() { System.out.println("X m3"); } public void m1() { System.out.println("X m1"); } } public class Y implements A, B { public void m1() { System.out.println("Y m1"); } public void m2() { System.out.println("Y m2"); } public void m3() { System.out.println("Y m3"); } public void m4() { System.out.println(Y m4"); } } public class Z implements C { public void m1() { System.out.println("Z m1"); } public void m2() { System.out.println("Z m2"); } public void m3() { System.out.println("Z m3"); } public void m4() { System.out.println("Z m4"); } } Assume the following variables are created. X x = new X(); Y y = new Y(); Z z = new Z(); A a = new Y(); B b = new X(); B b2 = new Y(); C c = new Z(); Write…
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