Convert String to Stream : Both Ways

• Java Developers faces the requirement for converting String to Stream or vice verse many times during the project development.

• Generally when there is a situation like reading some file from a remote source (HTTP request), Then the response comes in stream.Here developer need to convert this stream to string.

Code For String to Stream or Stream to String:-

package com.sandeep.java.utility;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

public class JavaUtility {

 public static InputStream convertStringToStream(String instr) {

  InputStream is = new ByteArrayInputStream(instr.getBytes());

  return is;

 }

 public static String convertStreamToString(InputStream is) {

  BufferedReader br = new BufferedReader(new InputStreamReader(is));
  
  StringBuilder outputstring = new StringBuilder();
  
  String chunk = null;
  
  try {
   while ((chunk = br.readLine()) != null) {
    outputstring.append(chunk);
   }
  } catch (IOException e) {
   e.printStackTrace();
  } finally {
   try {
    br.close();
   } catch (IOException e) {
    e.printStackTrace();
   }
  }

  return outputstring.toString();

 }

 public static void main(String[] args) {

  InputStream ins = JavaUtility.convertStringToStream("Sandeep Patel- Original input String");
  String outputString = JavaUtility.convertStreamToString(ins);
  System.out.print("Output : "+outputString+"n");
  
 }
}

Output:-

Output : Sandeep Patel- Original input String