Print string with null character in java

Question

I have string which contains null character ie \0. How can I print the whole string in java?

String s = new String("abc\u0000def");
System.out.println(s.length());

System.out.println(s);

Output on eclipse console:

7
abc

Length is that of complete string, but how can I print the whole string?

UPDATE: I am using

Eclipse Helios Service Release 2

Java 1.6

Idell

Works for me (Eclipse console), output is 7<nl>abc def - on what system, and on which console, did you start the program? – Abdias

It prints abc def. What else do you expect it to print? (There is no space actually between abc & def, its a null char there, but it prints though) – Nephology

so you want \u0000 in output? – Monosepalous

btw, there's no good reason to write new String("abc\u0000def") in this context. "abc\u0000def" would suffice. – Roentgenograph

Do you want abc def as output or do you literally want abc\u0000def? – Pessimist

@Andreas I have updated my question, please have a look – Idell

@Pessimist I just want that all the printable chars are printed, and whatever is printed for unprintable chars. – Idell

Answer 1

If Eclipse won't cooperate, I'd suggest replacing the null characters with spaces before printing:

System.out.println(s.replace('\u0000', ' '));

If you need to do this in a lot of places, here's a hack to filter them from System.out itself:

import java.io.*;

...

System.setOut(new PrintStream(new FilterOutputStream(
        new FileOutputStream(FileDescriptor.out)) {
    public void write(int b) throws IOException {
        if (b == '\u0000') b = ' ';
        super.write(b);
    }
}));

Then you can call System.out methods normally, with all the data going through the filter.

Photoengraving

Answer 2

Converting the String to char array is an alternative. This works for me:

System.out.println(s.toCharArray());

Which outputs abcdef to the console (eclipse).

Virgy

Answer 3

the correct output of your code using Java 5 or higher is

public class TestMain
{
    public static void main(String args[])
    {
        String s = new String("abc\u0000def");
        System.out.println(s.length());
        System.out.println(s);
    }
}

7
abc def

Maleate