• On April 7, 2025
• By Karmehavannan
• 0 Comment
• Categories: subtraction
• Tags: Java language, Java programs

20 ways to subtract two numbers in Java

20 ways to subtract two numbers in Java

In this article, we will discuss the concept of the 20  ways to add two numbers in Java

In this post, we are going to learn how to find sum of two number using 10 ways(methods) in Java programming language

ways to subtract two numbers

Simple subtraction  using “-” operator

Here, we use a simple “-” operator to find the subtraction of two numbers

Program 1

// subtract two numbers using - operator
class Simple_Subtract_Twonum_UsingMinus {
    public static void main(String[] args) {
        int num1=100;
         int num2=70;
         int result=num1-num2;;
    System.out.println("Subtraction of two numbers using minus operator");
    System.out.println("Result is:" + result);
        
    }
    
}

When the above code is executed, it produces the following result

Subtraction of two numbers using minus operator
Result is:30

Subtraction of two numbers using Custom method

Here, we use a Java user defined method to find the subtraction of two numbers

Program 2

// subtract two numbers using - operator
class Simple_Subtraction_Twonum_UsingMinus {
    public static void main(String[] args) {
        int num1=120;
         int num2=70;
         int result;
          result=subtract_TwoNum(num1,num2);
          //Calling the method for output
    System.out.println("Subtraction of two numbers using Custom method  ");
       System.out.println("result is: "+result);
        
    }
    
public static int subtract_TwoNum(int a, int b){
return a - b;
}

}

When the above code is executed, it produces the following result

Subtraction of two numbers using Custom method
result is: 50

Subtraction of two numbers using Math.subtractExact Method

Here, we use Math.subtractExact to find the subtraction of two numbers in Java Language

Program 3

// subtract two numbers using Math class
import java.lang.Math;
class Subtraction_Twonum_MathClass {
    public static void main(String[] args) {
         int num1=75;
         int num2=25;
          int result=Math.subtractExact(num1,num2);
          //Calling the Math.subtractExact(); metod
    System.out.println("Subtraction of two numbers using Math.subtractExact(); metod:  ");
       System.out.println("Result is: "+result );
        
    }
}

When the above code is executed, it produces the following result

Subtraction of two numbers using Math.subtractExact(); metod:
Result is: 50

Subtraction of two numbers using Math.subtractExact with custom Method

Here, we use Math.subtractExact with custom  to find the subtraction of two numbers in Java Language

Program 4

// subtract two numbers using Matg class
import java.lang.Math;
class Subtraction_Twonum_MathClass {
    public static void main(String[] args) {
         int num1=55;
         int num2=25;
          int result=subtract(num1,num2);
    System.out.println("Subtraction of two numbers using Math class:  ");
       System.out.println("Result is: "+result );
        
    }
    
public static int subtract(int a, int b){
return Math.subtractExact(a,b) ;
}

}

When the above code is executed, it produces the following result

Subtraction of two numbers using Math class:
Result is: 30

Simple subtraction  using “-” operator with user input

Here, we use “-” operator with user input  to find the subtraction of two numbers in Java Language

Program 5

//subtract two numbers using scanner input 
import java.util.Scanner;
class Subtract_Twonum_UsingMinus {
    public static void main(String[] args) {
        int result=0;
Scanner input=new Scanner(System.in);
 System.out.println("Input value for num1:");
        
int num1=input.nextInt();

 System.out.println("Input value for num2:");
         
int num2=input.nextInt();
             System.out.println("Subtraction of two numbers using user input:");
              
        System.out.println(num1 + "-" + num2 + "=" + result);
        
    }
}

When the above code is executed, it produces the following result

Input value for num1:
140
Input value for num2:
80
Subtraction of two numbers using ser input:
140-80=0

Simple subtraction  using “-” operator and custom method with user input 

Here, we use “-” operator and custom method with user input  to find the subtraction of two numbers in Java Language

Program 6

//subtract two numbers using scanner input with method
import java.util.Scanner;
class Subtract_Twonum_UsingMinus {
    public static void main(String[] args) {
        int result=0;
Scanner input=new Scanner(System.in);
 System.out.println("Input value for num1:");
int num1=input.nextInt();

 System.out.println("Input value for num2:");
int num2=input.nextInt();
             System.out.println("Subtraction of two numbers using user input:");
              
        result=subtract(num1,num2);
        System.out.println(num1 + "-" + num2 + "=" + result);
    }
    public static int subtract(int a, int b){
 int result=a - b;
 return result;

}

}

When the above code is executed, it produces the following result

Input value for num1:
135
Input value for num2:
55
Subtraction of two numbers using user input:
135-55=80

subtraction  using  instance method with user input

Here, we use instance  method with user input  to find the subtraction of two numbers in Java Language

Program 7

//subtract two numbers using scanner input with method
import java.util.Scanner;
class Subtract_Calc{
    public static void main(String[] args) {
        int result=0;
Scanner input=new Scanner(System.in);
 System.out.println("Input value for num1:");
int num1=input.nextInt();

 System.out.println("Input value for num2:");
int num2=input.nextInt();
             System.out.println("Subtraction of two numbers using user input:");
             Subtract_Calc calc=new  Subtract_Calc(); 
        result=calc.subtract(num1,num2);
        System.out.println(num1 + "-" + num2 + "=" + result);
    }
    public static int subtract(int a, int b){
 int result=a - b;
 return result;

}

}

When the above code is executed, it produces the following result

Input value for num1:
34
Input value for num2:
25
Subtraction of two numbers using intance method with user input:
34-25=9

Subtraction of two numbers using conditional operator

Here, we use conditional operator  to find the subtraction of two numbers in Java Language

Program 8

//subtract two numbers using conditional operator
class Subtraction_Twonum_Con_Operator {
    public static void main(String[] args) {
        int num1=90;
         int num2=30;
         int result;
          result=subtract(num1,num2);
    System.out.println("Subtraction of two numbers using conditional operator:  "+result);
        
    }
    
public static int subtract(int a, int b){
return (b>=a) ? 0:a-b ;
}

}

When the above code is executed, it produces the following result

Subtraction of two numbers conditional operator: 60

Subtract two numbers using a for loop

Here, we use a for loop  to find the subtraction of two numbers in Java Language

Program 9

//subtract two numbers using a for loop
class Subtract_Twonum_ForLoop {
    public static void main(String[] args) {
         int result;
         int num1=30,num2=15;
          result=subtract_For(num1,num2);
          //call the user-defined method
    System.out.println("Subtraction of two numbers using for loop:  "+result);
        
    }
    
public static int subtract_For(int a, int b){//custom method
    int result=a;
         for(int i=0; i<b; i++){//for loop
result--;
}
return result;
       
        
    }

}

When the above code is executed, it produces the following result

Subtraction of two numbers using for loop: 15

Subtract two numbers using a while loop

Here, we use a while loop  to find the subtraction of two numbers in Java Language

Program 10

//subtract two numbers using a while loop
class Subtraction_Twonum_usingWhileLoop {
    public static void main(String[] args) {
          int result;
         int num1=50,num2=15;
         //call the user-defined method
          result=subtract_Whileloop(num1,num2);
    System.out.println("Subtraction of two numbers using while loop:  "+result);
        
    }
    
public static int subtract_Whileloop(int a, int b){//custom method
    int result=a;
    int i=0;
        while( i<b){
result--;
i++;
}
return result;
       
        
    }

}

When the above code is executed, it produces the following result

Subtraction of two numbers using while loop: 35

Subtract two numbers using a do-while loop

Here, we use a do-while loop  to find the subtraction of two numbers in Java Language

Program 11

//subtract two numbers using a do-while loop
class Subtraction_Twonum_usingWhileLoop {
    public static void main(String[] args) {
         int result;
         int num1=100,num2=55;
         //call the user-defined method
         
          result=subtract_DoWhileloop(num1,num2);
    System.out.println("Subtraction of two numbers using do-while loop:  "+result);
        
    }
    
public static int subtract_DoWhileloop(int a, int b){//custom method
    int result=a;
    int i=0;
       do{
result--;
i++;
} while( i<b);
return result;
       
        
    }

}

When the above code is executed, it produces the following result

Subtraction of two numbers using do-while loop: 45

Subtract two numbers using bitwise  operator

Here, we use bitwise operator  to find the subtraction of two numbers in Java Language

Program 12

// subtract two numbers usng Bitwise operator with while 
class SubtractionTwonumBitwise {
    public static void main(String[] args) {
         int result;
int num1=123;
int num2=33;
          result=num1+(~num2 + 1);
    System.out.println("Subtraction of two numbers using Bitwise operator  ");
    System.out.println("Result is  "+result);
        //displaying the result
    }


}

When the above code is executed, it produces the following result

Subtraction of two numbers using Bitwise operator
Result is 90

Subtract two numbers using Integer.summethod and negation

Program 13

// subtract two numbers usng Integer.sum method
class SubtractionTwonumBitwise {
    public static void main(String[] args) {
         int result;
int num1=163;
int num2=83;
          result=Integer.sum(num1,-num2);
    System.out.println("Subtraction of two numbers using Integer.sum method  ");
    System.out.println("Result is  "+result);
        //displaying the result
    }


}

When the above code is executed, it produces the following result

Subtraction of two numbers using Integer.sum method
Result is 80

Subtract two numbers using Recursion

Program 14

// subtract two numbers using recursion
class Recursion_Subtract_Twonum {
    public static void main(String[] args) {
        int num1=180;
         int num2=90;
         int result;
          result=subtract_Recursion(num1,num2);
    System.out.println("Subtraction using recursion ");
     System.out.println("Result is "+result);
        
    }
    
public static int subtract_Recursion(int a, int b){//recursive method in Java
if(b==0){
return a;
}else{
return subtract_Recursion(a - 1, b - 1);
}


}

}

When the above code is executed, it produces the following result

Subtraction using recursion
Result is 90

Subtract two numbers using ternary operator

Program 15

class Subtract_Twonum_Usingternary {
    public static void main(String[] args) {
        int num1=70;
         int num2=35;
         int result;
         result=(num1>num2) ? num1 - num2: num2 - num1;
         System.out.println("Subtraction of two numbers using Ternary operator: ");
        System.out.println("Result is: "+result);
        
    }
}

When the above code is executed, it produces the following result

Subtraction of two numbers using Ternary operator:
Result is: 35

Subtraction of two numbers using AtomicInteger

Program 16

// subtract two numbers
//using the AtomicInteger class
import java.util.concurrent.atomic.AtomicInteger;
class Subtract_Twonum_AtomicInteger {
    public static void main(String[] args) {
        int num1=250;
         int num2=155;
AtomicInteger result=new AtomicInteger(num1);
         int subtract=result.addAndGet(-num2);

        System.out.println("Subtraction of two numbers using AtomicInteger: ");
        System.out.println("Result is: "+result.get());
        
    }
}

When the above code is executed, it produces the following result

Subtraction of two numbers using AtomicInteger:
Result is: 95

Subtraction of two numbers using  Bigdecimal class

Program 17

// subtract two numbers using the BigDecimal class
import java.math.BigDecimal;
class BigDecimal_Subtract_Twonum {
    public static void main(String[] args) {
        int num1=60;
         int num2=15;
         int result;
        
        System.out.println("Result is: "+BigDecimal.valueOf(num1).subtract(BigDecimal.valueOf(num2)));
        
    }
}

When the above code is executed, it produces the following result

Result is: 45

Subtraction of two numbers using  Array

Program 18

// subtract two numbers
//using the array
class Subtract_Twonum_Array {
    public static void main(String[] args) {
        int num1=70;
        int num2=15;
        int[] arr={num1,num2};
         
         int result=arr[0]-arr[1];
        System.out.println("Subtract two number using array ");
        System.out.println("Result is: "+ result);
        
    }
}

When the above code is executed, it produces the following result

Subtract two number using array
Result is: 55

Subtraction of two numbers using  BigInteger

Program 19

// subtract two numbers
//using the BigInteger class
import java.math.BigInteger;
class BigInteger_Subtract_Twonum {
    public static void main(String[] args) {
        
         BigInteger a=new BigInteger("100");
         BigInteger b=new BigInteger("40");
         BigInteger result=a.subtract(b);
       
        
        System.out.println("Result is: "+result);
        
    }
}

When the above code is executed, it produces the following result

Result is: 60

Subtraction of two numbers using the IntUnaryOperator

Program 20

// subtract two numbers
//using the IntUnaryOperator
import java.util.function.IntUnaryOperator;
class IntUnaryOperator_Subtract_Twonum {
    public static void main(String[] args) {

        IntUnaryOperator subtract = b -> 25 - b;
       
        int result=subtract.applyAsInt(12);
        System.out.println("Result is: "+result);
        
    }
}

When the above code is executed, it produces the following result

Result is: 13