PROGRAM TO VALIDATE THE EXPRESSION WITH BINARY OPERATOR.

---

Program:

package symbol_table;

import java.util.Arrays;

import java.util.Scanner;

public class Bnry_operator

{   

    String result[] = new String[50];

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        String myString = sc.nextLine();

        String[] result = myString.split("(?<=[-+*/])|(?=[-+*/])");

        String[] as = {"+", "-", "/", "*"};

        System.out.println(Arrays.toString(result));

        int flag = 0;

        System.out.println(result.length);

        for (int i = 0; i < result.length ; i++) {

            if (result[i].toString().contains("+")) {

                flag++;

            } else if (result[i].toString().contains("-")) {

                flag++;

            } else if (result[i].toString().contains("/")) {

                flag++;

            } else if (result[i].toString().contains("*")) {

                flag++;

            } else if (result[i].toString().contains("%")) {

                flag++;

            } else {

            }

        }

        int pp=(result.length-flag)+1;

        if (flag == ((result.length) - flag) - 1) {

            System.out.println("Valid Expression ");

        } else {

            System.out.println("Invalid Expression ");

        }

    }

}

OUTPUT: