Strip whitespace and newlines from XML in Java

Question

Using Java, I would like to take a document in the following format:

Answer 1

Try this code. read and write methods in FileStream ignore whitespace and indents.

try {
    File f1 = new File("source.xml");
    File f2 = new File("destination.xml");
    InputStream in = new FileInputStream(f1);  
    OutputStream out = new FileOutputStream(f2);

    byte[] buf = new byte[1024];
    int len;
    while ((len = in.read(buf)) > 0){
    out.write(buf, 0, len);
}
in.close();
out.close();
System.out.println("File copied.");
} catch(FileNotFoundException ex){
    System.out.println(ex.getMessage() + " in the specified directory.");
    System.exit(0);
} catch(IOException e7){
    System.out.println(e7.getMessage());  
}