A utility function to convert an InputStream to String.

StringUtils.java

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

public class StringUtils {
  private StringUtils() { /* No op */ }

  public static String from(InputStream is) {
    byte[] buffer = new byte[1024];
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    try {
      for (int count = is.read(buffer); count != -1; count = is.read(buffer)) {
        baos.write(buffer, 0, count);
      }
      baos.close();
      return new String(baos.toByteArray());
    } catch (IOException e) {
      e.printStackTrace();
    }

    return null;
  }
}