Java int Keyword
The Java int keyword is a primitive data types. The int data type is a 32-bit signed two's complement integer. Its default value is 0 and default size is 32 bits (4 byte). The range of a int value is -231 to 231-1.
Example: Create a int value
In the below example, variable x and y are created to store int values.
public class MyClass {
public static void main(String[] args) {
//creating int values
int x = 10;
int y = 20;
//printing variables
System.out.println("x = " + x);
System.out.println("y = " + y);
}
}
The output of the above code will be:
x = 10 y = 20
Example: Widening Casting (smaller to larger type)
An int value can be created by assigning a byte or a short data to an int variable. The compiler implicitly typecast these data types to int as shown in the output.
public class MyClass {
public static void main(String[] args) {
byte i = 10;
//Widening Casting
short j = i;
int k = j;
//printing variables
System.out.println("i = " + i);
System.out.println("j = " + j);
System.out.println("k = " + k);
}
}
The output of the above code will be:
i = 10 j = 10 k = 10
Example: Narrowing Casting (larger to smaller type)
For a larger data types like double, float, and long, narrowing casting is required. The compiler explicitly typecast these data types to int as shown in the output.
public class MyClass {
public static void main(String[] args) {
double i = 10.5d;
//Narrowing Casting
float j = (float) i;
long k = (long) j;
int l = (int) k;
//printing variables
System.out.println("i = " + i);
System.out.println("j = " + j);
System.out.println("k = " + k);
System.out.println("l = " + l);
}
}
The output of the above code will be:
i = 10.5 j = 10.5 k = 10 l = 10
❮ Java Keywords
