How to convert String to byte array and vice versa in java?

Question

In entity class i have string[] name; property stored in db so how can i fetch all values from table by passing again string array values to it.

Answer 1

We can use String getBytes() method to convert String to byte array and we can use String constructor new String(byte[] arr) to convert byte array to String.

Here is a simple program showing how to convert String to byte array in java.

import java.util.Arrays;

public class StringToByteArray {

    public static void main(String[] args) {
        String str = "PANKAJ";
        byte[] byteArr = str.getBytes();
        // print the byte[] elements
        System.out.println("String to byte array: " + Arrays.toString(byteArr));
    }
}

Output:
String to byte array: [80, 65, 78, 75, 65, 74]