Java Int

Java int

Created By: chatGPT

In Java, an int (integer) is a primitive data type that represents a 32-bit signed integer. It is commonly used to store whole numbers without any decimal values. You can perform various arithmetic operations with int variables, such as addition, subtraction, multiplication, and division.

int a = 10;
int b = 20;
int sum = a + b;
System.out.println("The sum is: " + sum);

You can also use the Integer class, which is a wrapper class for the primitive int type. This can be useful when you need to store integers in a collection or work with objects. The Integer class provides various methods for converting between types, as well as other useful functionalities.

Integer x = Integer.valueOf(15);
Integer y = 25;
int product = x * y;
System.out.println("The product is: " + product);

Remember that since int is a primitive type, it cannot be null. However, the Integer class can be assigned null. This distinction plays an important role in conditions and error handling.

Integer z = null;
if (z != null) {
    System.out.println(z);
} else {
    System.out.println("z is null");
}

When dealing with int types outside their maximum and minimum limits (-2,147,483,648 to 2,147,483,647), an overflow can occur, leading to unexpected results. Always ensure your calculations stay within bounds.

int maxInt = Integer.MAX_VALUE;
int overflow = maxInt + 1;
System.out.println("Overflowed value: " + overflow);