Convert double to int in Java

Tags: double int Convert

In this Java core tutorial, we learn how to convert double value into int value in Java by different solutions.

How to cast double to int value

ConvertDoubleToIntExample1.java 

public class ConvertDoubleToIntExample1 {
    public static void main(String[] args) {
        double value1 = 10.05;
        int value2 = (int)value1;

        System.out.println("double value: " + value1);
        System.out.println("int value: " + value2);
    }
}
The output is: 
double value: 10.05
int value: 10

How to use Math.round() method to convert double value to int

ConvertDoubleToIntExample2.java 

public class ConvertDoubleToIntExample2 {
    public static void main(String[] args) {
        double value1 = 123.45;
        int value2 = (int)Math.round(value1);

        System.out.println("double value: " + value1);
        System.out.println("int value: " + value2);
    }
}
The output is: 
double value: 123.45
int value: 123

How to use Double.intValue() method to return int value from Double

ConvertDoubleToIntExample3.java 

public class ConvertDoubleToIntExample3 {
    public static void main(String[] args) {
        double value1 = 789.24;
        Double doubleValue = Double.valueOf(value1);
        int value2 = doubleValue.intValue();

        System.out.println("double value: " + value1);
        System.out.println("int value: " + value2);
    }
}
The output is: 
double value: 789.24
int value: 789

Happy Coding 😊

Convert int to double in Java