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/*
Java Convert int Array To String Example
This Java Convert int Array To String example shows how to find convert an array of int
to a String in Java.
*/
import java.util.Arrays;
public class ConvertIntArrayToStringExample {
public static void main(String args[]){
//int array
int[] intNumbers = new int[]{1, 2, 3, 4, 5};
/*
* First approach is to loop through all elements of an int array
* and append them to StringBuffer object one by one. At the end,
* use toString method to convert it to String.
*/
//create new StringBuffer object
StringBuffer sbfNumbers = new StringBuffer();
//define the separator you want in the string. This example uses space.
String strSeparator = ” “;
if(intNumbers.length > 0){
//we do not want leading space for first element
sbfNumbers.append(intNumbers[0]);
/*
* Loop through the elements of an int array. Please
* note that loop starts from 1 not from 0 because we
* already appended the first element without leading space.s
*/
for(int i=1; i < intNumbers.length; i++){
sbfNumbers.append(strSeparator).append(intNumbers[i]);
}
}
System.out.println(“int array converted to String using for loop”);
//finally convert StringBuffer to String using toString method
System.out.println(sbfNumbers.toString());
/*
* Second options is to use Arrays class as given below.
* Use Arrays.toString method to convert int array to String.
*
* However, it will return String like [1, 2, 3, 4, 5]
*/
String strNumbers = Arrays.toString(intNumbers);
System.out.println(“String generated from Arrays.toString method: “ + strNumbers);
//you can use replaceAll method to replace brackets and commas
strNumbers = strNumbers.replaceAll(“, “, strSeparator).replace(“[“, “”).replace(“]”, “”);
System.out.println(“Final String: “ + strNumbers);
}
}
/*
Output of above given convert int array to String example would be
int array converted to String using for loop
1 2 3 4 5
String generated from Arrays.toString method: [1, 2, 3, 4, 5]
Final String: 1 2 3 4 5
*/
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