Convert string array to int array java

In this article, we will discuss how we will convert a string array into an int array. You can convert a string to an integer by using the parseInt () method of class Integer. To convert a string array to an array of integers, convert each element to integer and fill the integer array with them.

title: "Convert string array to int array java"
tags: java

canonical_url: https://kodlogs.com/blog/2150/convert-string-array-to-int-array-java

Example

import java.util.Arrays;

public class StringToIntegerArray {

   public static void main (Strng args [  ] {.

      String [  ] str = { "1134", "056", "892", "924"};

      int size = str.length;

      int [ ] arr = new int [size];

      for (int i = 0; i <size; i ++) {

         arr [i] = Integer.parseInt (str [i]);

      }

      System.out.println (Arrays.toString (arr));

   }

}

Output

[ 1134, 056 , 892 , 924 ]

If we want to convert the string to a primitive data type to int, we are here with a wrapper class, the conversion would be like this

convert class

{

public static void main (Strng args [ ]) {

String str = new String ( "20");

int i = Integer. parseInt (str);

System.out.println (i);

}

}

when this case convert the string to an integer array

Steps will be:

1. Accept String.

2. converted to a string as a string array using the split () uses the space as a delimiter.

3. The wrapper class has provided us with some packages (java.lang.Integer) and will be using parseInt () for each element in the array string.

4. Store in the integer array :-)
   

convert class

{

public static void main (String [] args)

{

String str = new String ( "20 30 40 50"); // enter new string

String [] s = str.split ( ""); // this is an array of strings

int [] arr = new int [s.length]; // create a new array of the type int

for (int i = 0; i <s.length; i ++) {

arr [i] = Integer.parseInt (s [i]); // parse each string integer

System.out.println (arr [i]);}

}

}

Output:

20

30

40

50
Hope that it will help you.