why my program never reach the solve method?

sorry if its a stupid question, but I a beginner using StreamTokenizer, I am trying to solve this exercise this, please help me, I dont know what its wrong in my program that never reach my solve method, it also never finishes, I already ask in timus forum, but I know that here is faster to receive an answers

import java.io.*;

public class Prueba {
    static int index = 0;
    static double[] l = new double[131072];

    public static void main(String args[]) throws IOException {
        StreamTokenizer str = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
        while (((str.nextToken() != StreamTokenizer.TT_EOF))) {
            if (str.ttype == StreamTokenizer开发者_JAVA百科.TT_NUMBER) {
                l[index++] = str.nval;
                //System.out.println(str.nval);
                // System.out.println(l[0]);
                // System.out.println(l[1]);
            }
        }
        solve();
    }

    public static void solve() {
        double res;
        for (int i = index - 1; i >= 0; i--) {
            res = Math.sqrt(l[i]);
            System.out.println(String.format("%.4f\n", res));
        }
    }
}

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You are reading from the standard input, and your code loops until it gets a TT_EOF. To feed a TT_EOF into your program, you need to press Ctrl-D if you're using Unix, or Ctrl-Z followed by Enter if you're using Windows.

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You are waiting on System.in, it is blocking on read, ergo, you will never get to EOF so you while loop will continue to wait for input.

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As it is, you either need to pipe a file from command line, or enter text on console followed by EOF character. Pressing Ctrl+Z generates EOF in Windows, and pressing Ctrl+D generates EOF in Unix/Linux.

EDIT: If your input is single line you can check for TT_EOL instead of TT_EOF. You must call eolIsSignificant(true) before entering the loop. This will make sure end-of-line is treated as separate token