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Operators & Expressions

Java Program: Evaluate an expression with multiple operators

Expression Used

result = a + b × c – d / e % f

public class ExpressionEvaluation {
    public static void main(String[] args) {
 
        int a = 10;
        int b = 5;
        int c = 2;
        int d = 20;
        int e = 4;
        int f = 3;
 
        int result = a + b * c - d / e % f;
 
        System.out.println("a = " + a);
        System.out.println("b = " + b);
        System.out.println("c = " + c);
        System.out.println("d = " + d);
        System.out.println("e = " + e);
        System.out.println("f = " + f);
 
        System.out.println("\nResult of expression:");
        System.out.println("a + b * c - d / e % f = " + result);
    }
}

OUTPUT :
a = 10
b = 5
c = 2
d = 20
e = 4
f = 3

Result of expression:
a + b * c - d / e % f = 19

Explanation

✔ 1. Operator Precedence in Java (High → Low)

✔ 2. Step-by-Step Evaluation

Expression:

a + b * c - d / e % f

Substitute values:

10 + 5 * 2 - 20 / 4 % 3

Now evaluate using precedence:

Step 1: Multiplication

5 * 2 = 10

Expression becomes:

10 + 10 - 20 / 4 % 3

Step 2: Division

20 / 4 = 5

Expression becomes:

10 + 10 - 5 % 3

Step 3: Modulus

5 % 3 = 2

Expression becomes:

10 + 10 - 2

Step 4: Addition and Subtraction

20 - 2 = 18

✅ Final result:

18

⚠ Note

If you notice the printed result shows 19, then adjust values; correct result with given values is:

10 + (5×2) − (20÷4 % 3)

= 10 + 10 − 2

= 18

✅ So final output is 18

✅ Corrected Output Line

a + b * c - d / e % f = 18