Java Program to Print an Integer
What is an Integer in Java ?
In Java, integer is a primitive data type that represents a 32-bit signed two’s complement integer. This means that an int variable can hold any whole number between -2,147,483,648 and 2,147,483,647, inclusive.
The int data type is frequently used for numeric values in Java, such as counting and indexing in loops, storing numerical values in variables, and performing arithmetic operations. It is also commonly used as the return type of methods that perform integer calculations.
Ways to Print an Integer in Java :
Syntax :
int num = 1234; System.out.println(num);
Syntax :
int num = 1234;
System.out.printf("%d", num);
Syntax :
int num = 1234; String numStr = String.valueOf(num); System.out.println(numStr);
Syntax :
int num = 1234; String numStr = Integer.toString(num); System.out.println(numStr);
Syntax :
int num = 1234; StringBuilder sb = new StringBuilder(); sb.append(num); System.out.println(sb.toString());
Example 1 :
public class Main {
public static void main(String[] args) {
int i = 1234;
// Using the System.out.println() method:
System.out.println(i);
// Using the System.out.printf() method with format specifiers:
System.out.printf( "%d", i);
}
}
Output :
1234 1234
Example 2 :
public class Main {
public static void main(String[] args) {
int i = 13545;
// Using the String.valueOf() method to convert the integer to a string:
System.out.println(String.valueOf(i));
// Using the Integer.toString() method to convert the integer to a string:
System.out.println(Integer.toString(i));
// Using the StringBuilder class:
System.out.println(new StringBuilder().append(i).toString());
}
}
Output :
13545 13545 13545
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