word count

hey i was working on a word count program and i need a little assistance.i cant use a string tokenizer or a set.after i get a string i need to print out the words and show how many times it was typed...like the following

"Hello there"

Hello = 1

There = 1

Now i want to know how i can separate the lines by spaces and how can i count them?

Thanx alot

Once you have the strings of the words that you want, you can simply put them in a HashMap which maps strings to integers. Example code might look like this:

Code:

---

Map<String,Integer> freqTable = new HashMap<String,Integer>();
String word = ...;
...
Integer i = freqTable.get(word);
if( i == null ) {
  freqTable.put(word, 1);
} else {
  freqTable.put(word, i+1); // line requires autoboxing
}

---

Hope this helps.

the countig given by evlich is really good. to split a sentence into words, use the split method from String class:

Code:

---

String text = "Hello there";
String words[] = text.split("\\s");
for (int i=0; i<words.length; i++){
  System.out.println("word "+i+"="+words[i]);
}

---

the "\\s" in split stands for any whitespace character, eg space, return and tabs. also see javadocs to class Pattern and String.