int Java Keyword with Examples

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Key points about int Keyword

1. The int keyword is used to declare a variable as a numeric type. For example, int a = 10;
2. A int variable is a signed 32-bit type that has a range from –2,147,483,648 to 2,147,483,647.
3. The Integer class is a wrapper class for the int primitive type. It defines MIN_VALUE and MAX_VALUE constants representing the range of values for this type.

int Java Keyword Example

In the following example, the sum, i and n variables are of type int:

package net.javaguides.corejava.variables; public class LocalVariableExample { public int sum(int n) { int sum = 0; for (int i = 0; i < n; i++) { sum = sum + i; } return sum; } public static void main(String[] args) { LocalVariableExample localVariableExample = new LocalVariableExample(); int sum = localVariableExample.sum(10); System.out.println("Sum of first 10 numbers -> " + sum); } }

Output:

Sum of first 10 numbers -> 45