Create a package by name logicgate which consist of classes for AND, OR, NOT gate, and all classes has method with signature int doOperation(arg_list), import this package in to java source file and simulate the behavior of all gates.
Objective
Write a Java program to simulate Logic Gates by creating a custom package and importing it into another file.
Algorithm / Approach
- Create three distinct classes:
Add,Not, andOr. - At the very top of each of these three files, declare the package:
package com.logigate;. - Inside each class, write a method that performs the respective bitwise operation (
&,~,|) and returns the result. - Create a main testing class in a separate package:
package com.alok;. - Import the logic gate package using:
import com.logigate.*;. - In the main method, instantiate the gate classes and call their methods.
Add.java
//File 1 : Add.java
package com.logigate;
public class Add {
public int add(int a, int b){
return a&b;
}
}
//File 2 : Not.java
package com.logigate;
public class Not {
public int not(int a){
return ~a;
}
}
//File 3 : Or.java
package com.logigate;
public class Or {
public int or(int a, int b) {
return a|b;
}
}
// File 4: Test.java
package com.alok;
import com.logigate.*;
import java.util.Scanner;
class Test {
public static void main(String[] a)
{
Add ar = new Add();
Scanner s=new Scanner(System.in);
System.out.print("Enter Num1: ");
int num1 = s.nextInt();
System.out.print("Enter Num2: ");
int num2 = s.nextInt();
int x = ar.add(num1,num2);
System.out.println("Add Result= "+x);
Or o = new Or();
int y = o.or(num1,num2);
System.out.println("Or Result= "+y);
Not n = new Not();
int z = n.not(num1);
System.out.print("Not Result= "+z);
}
}Expected Output
Enter Num1: 5 Enter Num2: 6 Add Result= 4 Or Result= 7 Not Result= -6
Explanation of the Program
- A Java package is a mechanism to encapsulate a group of classes, sub-packages, and interfaces. It helps organize code and prevent naming conflicts.
- In this program, we group three related classes into a package called
com.logigate. - Because the
Testclass belongs to a completely different package (com.alok), it cannot see the gate classes natively. We must explicitly pull them in using theimportstatement. - Note: For this program to compile correctly in a real terminal, the directory structure must perfectly match the package names (e.g.,
com/logigate/Add.java).
Complexity
Time Complexity
O(1)
Space Complexity
O(1)
