To convert from primitive arrays into object type arrays we can use Apache Commons Lang library. The Commons Lang provides an ArrayUtils
class that does this conversion. To convert the other way just use the toPrimitive()
method.
package org.kodejava.commons.lang;
import org.apache.commons.lang3.ArrayUtils;
public class ArrayPrimitiveObjectConversionDemo {
public static void main(String[] args) {
int[] numbers = {1, 2, 3, 4, 5};
boolean[] booleans = {true, false, false, true};
float[] decimals = {10.1f, 3.14f, 2.17f};
Integer[] numbersObjects = ArrayUtils.toObject(numbers);
Boolean[] booleansObjects = ArrayUtils.toObject(booleans);
Float[] decimalsObjects = ArrayUtils.toObject(decimals);
numbers = ArrayUtils.toPrimitive(numbersObjects);
booleans = ArrayUtils.toPrimitive(booleansObjects);
decimals = ArrayUtils.toPrimitive(decimalsObjects);
}
}
Maven Dependencies
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.12.0</version>
</dependency>
Latest posts by Wayan (see all)
- How do I create a string of repeated characters? - September 1, 2023
- How do I convert datetime string with optional part to a date object? - August 28, 2023
- How do I split large excel file into multiple smaller files? - April 15, 2023