Java: Find the value of specified expression

Last update on May 12 2025 13:12:18 (UTC/GMT +8 hours)

Evaluate Expressions

Write a Java program to find the value of a specified expression.

a) 101 + 0) / 3
b) 3.0e-6 * 10000000.1
c) true && true
d) false && true
e) (false && false) || (true && true)
f) (false || false) && (true && true)

Sample Solution:

Java Code:

public class Solution {
    public static void main(String[] args) {
        // Calculate the result of (101 + 0) divided by 3
        int r1 = (101 + 0) / 3;

        // Calculate the result of 3.0e-6 multiplied by 10000000.1
        double r2 = 3.0e-6 * 10000000.1;

        // Determine if both operands (true and true) are true using the AND operator
        boolean r3 = true && true;

        // Determine if one operand is false among true and false using the AND operator
        boolean r4 = false && true;

        // Determine if at least one operand is true among different combinations using the OR and AND operators
        boolean r5 = (false && false) || (true && true);

        // Determine if both sets of operands separately evaluate to false and true, using OR and AND operators
        boolean r6 = (false || false) && (true && true);
        
        // Display the results of the calculations
        System.out.println("(101 + 0) / 3) -> " + r1);
        System.out.println("(3.0e-6 * 10000000.1) -> " + r2);
        System.out.println("(true && true) -> " + r3);
        System.out.println("(false && true) -> " + r4);
        System.out.println("((false && false) || (true && true)) -> " + r5);
        System.out.println("(false || false) && (true && true) -> " + r6);
    }
}

Sample Output:

(101 + 0) / 3)-> 33
(3.0e-6 * 10000000.1)-> 30.0000003
(true && true)-> true
(false && true)-> false
((false && false) || (true && true))-> true
(false || false) && (true && true)-> false

Flowchart:

Flowchart: Java exercises: Test if a binary tree is a subtree of another binary tree.

For more Practice: Solve these Related Problems:

Write a Java program to evaluate a complex expression mixing arithmetic, bitwise, and logical operators without using extra parentheses.
Write a Java program to compute the value of an expression that combines integer division, modulus, and floating-point multiplication in one statement.
Write a Java program to evaluate a nested ternary expression that includes relational and bit-shift operations.
Write a Java program to test Java operator precedence by evaluating an expression containing arithmetic, relational, and logical operators.

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