//File name--> Calculator.java import java.io.*; class Calculator{ public static void main(String args[])throws Exception { int n1,n2; String choice; BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); System.out.println("Enter number1:"); n1=Integer.parseInt(br.readLine()); System.out.println("press \n + for addition \n - for subtraction \n * for multiplication \n / for division: "); choice=br.readLine(); System.out.println("Enter number2:"); n2=Integer.parseInt(br.readLine()); switch(choice) { case "+": System.out.println("Addition: "+n1+"+"+n2+" is:"+(n1+n2)); break; case "-": System.out.println("Subtraction:"+n1+"-"+n2+" is:"+(n1-n2)); break; case "*": System.out.println("Multiplication:"+n1+"*"+n2+" is:"+(n1*n2)); break; case "/": if(n2==0) System.out.println("Division by zero is not possible"); else System.out.println("Division:"+n1+"/"+n2+" is:"+(n1/n2)); break; } } }
OUTPUT
javac Calculator.java java Calculator Enter number1: 10 press + for addition - for subtraction * for multiplication / for division: + Enter number2: 20 Addition: 10+20 is:30 java Calculator Enter number1: 10 press + for addition - for subtraction * for multiplication / for division: - Enter number2: 20 Subtraction:10-20 is:-10 java Calculator Enter number1: 10 press + for addition - for subtraction * for multiplication / for division: * Enter number2: 20 Multiplication:10*20 is:200 java Calculator Enter number1: 10 press + for addition - for subtraction * for multiplication / for division: / Enter number2: 2 Division:10/2 is:5
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