BufferedReader_used.java

import java.io.*; 
class BufferedReader_used 
{ 
    public static void main(String args[]) throws IOException 
    { 
        String s = "This is a © copyright symbol " + 
            "but this is &copy not.\\n"; 
        char buf[] = new char[s.length()]; 
        s.getChars(0, s.length(), buf, 0); 
        CharArrayReader in = new CharArrayReader(buf); 
        BufferedReader f = new BufferedReader(in); 
        int c; 
        boolean marked = false; 
        while ((c = f.read()) != -1) 
        { 
            switch(c) 
            { 
                case '&': 
                if (!marked) 
                { 
                    f.mark(32); 
                    marked = true; 
                } 
                else 
                { 
                    marked = false; 
                } 
                break; 
                case ';': 
                if (marked) 
                { 
                    marked = false; 
                    System.out.print("(c)"); 
                } 
                else 
                    System.out.print((char) c); 
                break; 
                case ' ': 
                if (marked) 
                { 
                    marked = false; 
                    f.reset(); 
                    System.out.print("&"); 
                } 
                else 
                    System.out.print((char) c); 
                break; 
                default: 
                if (!marked) 
                    System.out.print((char) c); 
                break; 
            } 
        } 
    } 
}