Remove word "real" from the string after its first occurrence using HashMap

Question

It is not looping through the if loop in the code. The desired o/p is:

This is real project with  problems  problems are tough to solve  

My code:

public static void main(String[] args) {
    String s = "This is real project with real problems real problems are tough to solve";
    String key = "real";
    int count = 0;
    Map<Integer, String> map = new HashMap<Integer, String>();
    StringTokenizer st = new StringTokenizer(s);
    Integer v = null;
    String next;
    while (st.hasMoreElements()) {
        next = st.nextToken();
        // To assign unique key to the value in the string
        if (v == null)
            v = 1;
        else
            v++;
        map.put(v, next);
    }
    System.out.println("before: " + map);
    System.out.println(count);
    //To delete the word "real" from the string
    for (int i = 0; i <= map.size(); i++) {
        //This is not working
        if (map.containsValue("real") && count >= 1) {
            //To delete value in the hashMap with ""
            next = "";
        }
        count++;
    }

    System.out.println("After deleting: " + map );
}

Answer 1

Let's keep it simple:

String s = "This is real project with real problems real problems are tough to solve";
String key = "real";
// Get the index of the first occurrence
int index = s.indexOf(key);
StringBuilder buffer = new StringBuilder(s.length());
// Adds to the first part of the string
buffer.append(s.substring(0, index + key.length()));
// Adds to the second part of the string from which we removed the next occurences
buffer.append(s.substring(index + key.length()).replace(key, ""));
System.out.println(buffer);

Output:

This is real project with  problems  problems are tough to solve

Answer 2

I have no idea what you're trying to do in your loop. But if I've understood your requirements, this should do it:

for (int i = 1; i <= map.size(); i++) {
    if ("real".equals(map.get(i)) && count++ >= 1) {
        map.remove(i);
    }
}

Output:

After deleting: {1=This, 2=is, 3=real, 4=project, 5=with, 7=problems, 9=problems, 10=are, 11=tough, 12=to, 13=solve}