Java program

I have an assignment for java and I cant get it to compile and I dont know what is wrong, the script is:

import java.text.*;
import java.util.StringTokenizer.*;

public class d {
	public static void main (String [] args) throws IOException {
	double LOA;
	double LWL;
	double Beam;
	double Disp;
	double SailArea;
	String str;
	
        BufferedReader reader =
                new BufferedReader (new InputStreamReader (System.in));

        StringTokenizer tokenizer = new StringTokenizer (stdin.readLine ());

	System.out.println ("LOA: " + LOA);
        System.out.println ("LWL: " + LWL);
        System.out.println ("Displacement: " + Disp);
        System.out.println ("Beam: " + Beam);
        System.out.println ("Sail area: " + SailArea);
	System.out.print ("");
	System.out.println ("Hull Speed is: " + 1.34 * Math.pow(LWL , 0.5));
	System.out.println ("D/L: " + Disp  / (0.01 * (LWL  * LWL  * LWL ))); 
	System.out.println ("SA/D: " + SailArea  / Math.pow((Disp  / 64.0), 0.67));
	System.out.println ("Capsize index: " + Beam  / Math.pow((Disp  / 64.0), 0.33));
	System.out.println ("Comfort index: " + Disp  / (0.65 * ((0.7 * LWL ) + (0.3 * LOA )) * Math.pow(Beam , 1.33)));

	}
}```

and the errors I get back are:```markupd.java:17: cannot resolve symbol
symbol  : class StringTokenizer 
location: class d
        StringTokenizer tokenizer = new StringTokenizer (stdin.readLine ());
        ^
d.java:17: cannot resolve symbol
symbol  : class StringTokenizer 
location: class d
        StringTokenizer tokenizer = new StringTokenizer (stdin.readLine ());
                                        ^
d.java:17: cannot resolve symbol
symbol  : variable stdin 
location: class d
        StringTokenizer tokenizer = new StringTokenizer (stdin.readLine ());
                                                         ^
3 errors```
can anyone help me?

Hi! You're code is not running since you're passing a parameter to the StringTokenizer class that is undeclared and uninitialized, it should be done this way…

BufferedReader reader = new BufferedReader(new InputStreamReader(
			System.in));

	StringTokenizer tokenizer = new StringTokenizer(reader.readLine());

…………. BUT …………….. you should be using the args String array variable to retrieve user inputs or arguments for this task instead of the BufferedReader. It is unnecessary…

Try this out instead:

public static void main(String[] args) throws IOException {
	
	if (args != null && args.length <= 5) {
		double LOA = Double.parseDouble(args[0]);
		double LWL = Double.parseDouble(args[1]);
		double Beam = Double.parseDouble(args[2]);
		double Disp = Double.parseDouble(args[3]);
		double SailArea = Double.parseDouble(args[4]);
		String str = args[5];
		
		//do your other stuf here
		
	}
    }

oh wait, change that condition I just gave in my last reply in main method with 'args.length <= 6' … sorry 4 that ;)

Cheers!

just note that every java program needs to have a main method to operate so u need

public static void main(String[] args) {

}