10 ways to subtract two numbers in Java

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10 ways to subtract two numbers in Java

In this article, we will discuss the concept of Java Code Examples – 10 ways to subtract two numbers in Java

In this post, we are going to learn how to write a program to 10 Ways to Subtract Two Numbers (With Examples) in the Java programming language.

Subtract of two numbers in Java

here, I’ll give you separate short programs for each method so it’s easier to understand

Using the Subtraction “-” operator

Method 1

int result=num1 - num2

Example 1

//Subtract two numbers in Java
// Using subtraction operator

class HelloWorld {
    public static void main(String[] args) {
        int number1=34;
        int number2=26;
        int sub=number1 - number2;
        System.out.println("The subtraction of "+number1+" and "+number2+" is :"+sub);
    }
}

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

The subtraction of 34 and 26 is :8

Using the Math.subtractExact() method

Method 2

int result=Math.subtractExact(num_1,num_2);

Example 2

// subtract two numbers
//using Math.subtractExact(); method
import java.lang.Math;
class Math_Subtract_Twonum {
    public static void main(String[] args) {
        int num_1=50;
         int num_2=15;
         int result;
         result=Math.subtractExact(num_1,num_2);
        System.out.println("Result is: "+result);
        
    }
}

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

Result is: 35

Using bitwise compliment (~) operator and addition

Method 3

result=num_1 + ~num_2 + 1;

Example 3

// subtract two numbers
//using bitwise operator
import java.lang.Math;
class Math_Subtract_Twonum {
    public static void main(String[] args) {
        int num_1=500;
         int num_2=150;
         int result;
         result=num_1 + ~num_2 + 1;
        System.out.println("Result is: "+result);
        
    }
}

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

Result is: 350

Using recursive method

Method 4

result=subtract_Recursion(num1,num2);

Example 4

// subtract two numbers using recursive method
//import java.lang.Math;
class Recursive_Subtract_Twonum {
    public static void main(String[] args) {
        int num1=150;
         int num2=15;
         int result;
          result=subtract_Recursion(num1,num2);
    System.out.println("Subtraction using recursive method "+result);
        
    }
    
public static int subtract_Recursion(int a, int b){//recursive method
if(b==0){
return a;
}else{
return subtract_Recursion(a - 1, b - 1);
}


}

}

Using user-defined method

Method 5

int result=subtract_Method(num1,num2);

Example5

// subtract two numbers using user-defined method
//import java.lang.Math;
class subtract_Twonum_Method {
    public static void main(String[] args) {
        int num1=55;
         int num2=5;
         int result;
          result=subtract_Method(num1,num2);
    System.out.println("Subtraction of two numbers using method  "+result);
        
    }
    
public static int subtract_Method(int a, int b){
return a - b;
}

}

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

Subtraction of two numbers using method 50

Using a loop

Method 6

int result=0;
for(int i=0; i<num2; i++){
result--;

}
result+=num1;

Example 6

// subtract two numbers
//using a for loop
import java.lang.Math;
class Subtract_Twonum {
    public static void main(String[] args) {
        int num1=230;
         int num2=150;
         int result=0;
        for(int i=0; i<num2; i++){
result--;

}
result+=num1;
        System.out.println("Result is: "+result);
        
    }
}

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

Result is: 80

Using ternary operator

method 7

int result=(num_1>num_2) ? num_1 - num_2: num_2 - num_1;

Example 7

// subtract two numbers
//using ternary operator

class ternarySubtract_Twonum {
public static void main(String[] args) {
int num_1=50;
int num_2=35;
int result;
result=(num_1>num_2) ? num_1 - num_2: num_2 - num_1;
System.out.println("Result is: "+result);

}
}

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

Result is: 15

Using Switch statements

method 8

int result=0; 
switch(number2){ 
case 1: 
result= number1-1; 
break;
//if you want other cases can be added

Example 8

// subtract two numbers
//using the Switch Case statements
class Subtract_Twonum_Switch {
    public static void main(String[] args) {
         int a=10;
         int b=3;
         int result=0;
switch(b){

case 1:
result= a-1;
break;

case 2:
result =a-2;
break;

case 3:
result= a-3;
break;

//if you want other cases can be added 

default:
result= 0;
}
        System.out.println("Result is: "+result);
        
    }
}

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

Result is: 7

Using AtomicInteger class

method 9

AtomicInteger result=new AtomicInteger(num1);
int subtract=result.addAndGet(-num2);

Example 9

// subtract two numbers
//using the AtomicInteger class
import java.util.concurrent.atomic.AtomicInteger;
class AtomicInteger_Subtract_Twonum {
    public static void main(String[] args) {
        int num_1=120;
         int num_2=50;
AtomicInteger sub=new AtomicInteger(num_1);
         int result=sub.addAndGet(-num_2);

        
        System.out.println("Result is: "+sub.get());
        
    }
}

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

Result is: 70

Using BigDecimal class

method 10

BigDecimal.valueOf(num1).subtract(BigDecimal.valueOf(num2)));

Example 10

// subtract two numbers
//using the BigDecimal class
import java.math.BigDecimal;
class BigDecimal_Subtract_Twonum {
    public static void main(String[] args) {
        int num_1=20;
         int num_2=15;
        
        System.out.println("Result is: "+BigDecimal.valueOf(num_1).subtract(BigDecimal.valueOf(num_2)));
        
    }
}

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

Result is: 5

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