In this tutorial we will learn how to Convert intArray (int[]) to integerArray (Integer[]) and Convert integerArray (Integer[]) to intArray (int[]) with and without using Commons Library in java with program and examples.
Contents of page >
1. Convert intArray (int[]) to integerArray (Integer[]) in java
- Program/Example 1.1 to Convert intArray (int[]) to integerArray (Integer[]) in java.
- Program/Example 1.2 to Convert intArray (int[]) to integerArray (Integer[]) Using Commons Library in java.
2. Convert integerArray (Integer[]) to intArray (int[]) in java
- Program/Example 2.1 to Convert integerArray (Integer[]) to intArray (int[]) in java.
- Program/Example 2.2 to Convert integerArray (Integer[]) to intArray (int[]) Using Commons Library in java.
1. Convert intArray (int[]) to integerArray (Integer[]) in java
Program/Example 1.1 to Convert intArray (int[]) to integerArray (Integer[]) in java.
public class intArrayToIntegerArrayConversionExample {
public static void main(String[] args) {
/**
* Convert intArray (int[]) to integerArray (Integer[])
*/
int intArray[] = { 3, 4, 7 };
Integer integerArray[] = new Integer[intArray.length];
for (int i = 0; i < intArray.length; i++) {
//Autoboxing will be performed, int will automatically converted to Integer
integerArray[i] = intArray[i];
}
System.out.println("Display integerArray (Integer[]) formed from intArray (int[])");
for (Integer integer : integerArray) {
System.out.print(integer+" ");
}
}
}
/*output
Display integerArray (Integer[]) formed from intArray (int[])
3 4 7
*/
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Program/Example 1.2 to Convert intArray (int[]) to integerArray (Integer[]) Using Commons Library in java.
import org.apache.commons.lang3.ArrayUtils;
/**
* Convert intArray (int[]) to integerArray (Integer[]) Using Commons Library
*/
public class intArrayToIntegerArrayConversionUsingCommonsLibraryExample {
public static void main(String[] args) {
int intArray[] = { 3, 4, 7 };
//convert intArray (int[]) to integerArray (Integer[])
//using ArrayUtils.toObject(intArray) method of Commons Library
Integer integerArray[] = ArrayUtils.toObject(intArray);
System.out.println("Display integerArray (Integer[]) formed "
+ "from intArray (int[]) using "
+ "ArrayUtils.toObject(intArray) "
+ "method of Commons Library");
for (Integer integer : integerArray) {
System.out.print(integer+" ");
}
}
}
/*output
Display integerArray (Integer[]) formed from intArray (int[]) using ArrayUtils.toObject(intArray) method of Commons Library
3 4 7
*/
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2. Convert integerArray (Integer[]) to intArray (int[]) in java >
Program/Example 2.1 to Convert integerArray (Integer[]) to intArray (int[]) in java.
public class IntegerArrayTointArrayConversionExample {
public static void main(String[] args) {
/**
* Convert integerArray (Integer[]) to intArray (int[])
*/
Integer[] integerArray = { 3, 4, 7 };
int[] intArray = new int[integerArray.length];
for (int i = 0; i < integerArray.length; i++) {
//Unboxing will be performed, Integer will be automatically converted to int
intArray[i] = integerArray[i];
}
System.out.println("Display intArray (int[]) formed from integerArray (Integer[]) ");
for (int i : intArray) {
System.out.print(i+" ");
}
}
}
/*output
Display intArray (int[]) formed from integerArray (Integer[])
3 4 7
*/
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Program/Example 2.2 to Convert integerArray (Integer[]) to intArray (int[]) Using Commons Library in java.
import org.apache.commons.lang3.ArrayUtils;
/**
* Convert integerArray (Integer[]) to intArray (int[]) Using Commons Library
*/
public class IntegerArrayTointArrayConversionUsingCommonsLibraryExample {
public static void main(String[] args) {
Integer[] integerArray = { 3, 4, 7 };
//Convert integerArray (Integer[]) to intArray (int[]) Using
//ArrayUtils.toPrimitive(integerArray) Commons Library
int[] intArray = ArrayUtils.toPrimitive(integerArray);
System.out.println("Display intArray (int[]) formed from integerArray (Integer[]) using "
+ "ArrayUtils.toPrimitive(integerArray) "
+ "method of Commons Library ");
for (int i : intArray) {
System.out.print(i+" ");
}
}
}
/*output
Display intArray (int[]) formed from integerArray (Integer[]) using ArrayUtils.toPrimitive(integerArray) method of Commons Library
3 4 7
*/
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Summary -
So in this tutorial we learned how to Convert intArray (int[]) to integerArray (Integer[]) and Convert integerArray (Integer[]) to intArray (int[]) with and without using Commons Library in java with program and examples.
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