java byte数组转换成string java中如何将byte数组转换为string

In some cases, we have to convert String variable into a Byte array format, for example, JCE encryption. However how do weconvert a Byte[] array to String afterward?

Simple toString() function like following code is not working property. It will not display the original text but byte value.

String s = bytes.toString();

In order to convert Byte array into String format correctly, we have to explicitly create a String object and assign the Byte array to it.

String s = new String(bytes);

public class TestByte
{    
 public static void main(String[] argv) {
 
      String example = "This is an example";
      byte[] bytes = example.getBytes();
 
      System.out.println("Text : " + example);
      System.out.println("Text [Byte Format] : " + bytes);
      System.out.println("Text [Byte Format] : " + bytes.toString());
    
      //String s = new String(bytes, "UTF-8");
      String s = new String(bytes);
      System.out.println("Text Decryted : " + s);
 
 
 }
}

Output

Text : This is an example
Text [Byte Format] : [B@187aeca
Text [Byte Format] : [B@187aeca
Text Decryted : This is an example