public byte[] getBytes() method is used to convert string to byte array. see more about String getBytes
To convert byte array to string use new String(bytes)
Example
package com.pretech;public class ByteArrayConversion {public static void main(String[] args) {StringBuffer sb=new StringBuffer();sb.append("hello").append("world");System.out.println(sb);byte[] bytearray=String.valueOf(sb).getBytes();System.out.println(new String(bytearray));}}
Output
helloworld
helloworld
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