private String word = "";

public int freq = 1;

public Word() {

}

public Word(String s) {

word = s;

}

public boolean equals(Object el) {

return word.equals(((Word)el).word);

}

public int compareTo(Object el) {

return word.compareTo(((Word)el).word);

}

public String toString() {

return word + ": " + freq + " ";

}

public WordSplay() {

differentWords = wordCnt = 0;

}

private int differentWords, // counter of different words in text file;

wordCnt; // counter of all words in the same file;

protected void visit(SplayTreeNode p) {

differentWords++;

wordCnt += ((Word)p.el).freq;

System.out.println(p.el + " ");

}

public void run(InputStream fIn, String fileName) {

int ch = 1;

Word p;

try {

while (ch > -1) {

while (true)

if (ch > -1 && !Character.isLetter((char)ch)) // skip

ch = fIn.read(); // non-letters;

else break;

if (ch == -1)

break;

String s = "";

while (ch > -1 && Character.isLetter((char)ch)) {

s += Character.toUpperCase((char)ch);

ch = fIn.read();

}

if ((p = (Word)search(new Word(s))) == null)

insert(new Word(s));

else ((Word)p).freq++;

}

} catch (IOException io) {

System.err.println("A problem with input");

}

inorder();

System.out.println("\n\nFile " + fileName

+ " contains " + wordCnt + " words among which "

+ differentWords + " are different\n");

}

static public void main(String args[]) {

String fileName = "";

InputStream fIn;

BufferedReader buffer = new BufferedReader(

new InputStreamReader(System.in));

try {

if (args.length == 0) {

System.out.print("Enter a file name: ");

fileName = buffer.readLine();

fIn = new FileInputStream(fileName);

}

else {

fIn = new FileInputStream(args[0]);

fileName = args[0];

}

(new WordSplay()).run(fIn,fileName);

fIn.close();

} catch(IOException io) {

System.err.println("Cannot open " + fileName);

}

}