how to store byte in an array and get back the string

Question

I have to work with byte array and string in java . I read a file using java and and get the byte code from getBytes() method which is [B@1d1cdf7]

Is this possible to work again with this code . In my program to decode back to java string. I need byte array so how can i store this value in byte array. I want something like in another program i dont have the original text and i have only the byte array then how can i get back the string result.

score 0 · Accepted Answer · answered Nov 11 '13 at 06:53

0

You can use something like this:

    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    while(/* condition */ ) { // Get bytes from the file
        // Append bytes to the byteArray
        stream.write(bytes); 
    }

    String str = new String(stream.toByteArray()); // Get the string representation

answered Nov 11 '13 at 06:53

Ankur Shanbhag

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ankur in my text file file i have written the bytes as [B@1d1cdf7] . my query is how can i read this value as byte array – adesh singh Nov 11 '13 at 07:08
Use InputStream classes such as FileInputStream to read it as bytes. – Ankur Shanbhag Nov 11 '13 at 07:14
can you give me an example – adesh singh Nov 11 '13 at 07:16
Please refer this post on stackoverflow. http://stackoverflow.com/questions/858980/file-to-byte-in-java – Ankur Shanbhag Nov 11 '13 at 07:29

score 0 · Answer 2 · answered Nov 11 '13 at 06:54

0

You need to convert getBytes() to String.

public String toString(){
   return new String(getBytes());
}

answered Nov 11 '13 at 06:54

user2927772

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score 0 · Answer 3 · edited Jul 03 '15 at 07:46

0

To convert string to byte array try this

String test = "This is a test";

byte[] bytes = test.getBytes();
System.out.println("Byte : " + bytes);

now to convert byte array to string try this

String s = new String(bytes);
System.out.println("Text : " + s);

output

Byte : [B@25154f

Text : This is a test

edited Jul 03 '15 at 07:46

Vijay Vankhede

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answered Nov 11 '13 at 06:57

SpringLearner

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downvoters please tell what is wrong in this code,so that i can rectify it – SpringLearner Nov 11 '13 at 07:13

score -1 · Answer 4 · answered Nov 11 '13 at 07:02

-1

You can use Base64 encoding. This encoding is more suitable and portable for save binary data into string.

Base64 api in java :

sun.misc.BASE64Encoder;
sun.misc.BASE64Decoder;

answered Nov 11 '13 at 07:02

Vahid

137
8

how to store byte in an array and get back the string

4 Answers4