Java Math
Java Math
Java provides a built-in class called Math in the java.lang package which contains methods for performing mathematical operations like rounding, finding max/min values, square root, powers, random numbers, etc.
You can use Math methods directly without creating an object.
1. Math.max() and Math.min()
Used to find the largest or smallest between two numbers.
2. Math.sqrt()
Returns the square root.
3. Math.abs()
Returns absolute (positive) value.
4. Math.pow()
Returns value raised to a power.
5. Math.round(), Math.ceil(), Math.floor()
| Method | Description | Example |
|---|---|---|
round() | Rounds to nearest integer | Math.round(4.6) → 5 |
ceil() | Always rounds up | Math.ceil(4.1) → 5 |
floor() | Always rounds down | Math.floor(4.9) → 4 |
6. Math.random()
Generates a random number between 0.0 and 1.0.
Generate random numbers in a range:
➡️ Random number between 0 and 100:
7. Math.PI and Math.E
Constants for mathematical values:
8. Trigonometric Functions
Available methods:
| Method | Meaning |
|---|---|
sin() | Sine |
cos() | Cosine |
tan() | Tangent |
Example:
⭐ Full Example Using Math Methods
📌 Summary Table
| Feature | Example | Output |
|---|---|---|
| Max Value | Math.max(10,20) | 20 |
| Min Value | Math.min(10,20) | 10 |
| Power | Math.pow(2,3) | 8 |
| Square Root | Math.sqrt(25) | 5 |
| Random | Math.random() | 0–1 range |
| Round Up | Math.ceil(4.3) | 5 |
| Round Down | Math.floor(4.9) | 4 |
