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Thread: Please help, thanks.

  1. #1
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    Default Please help, thanks.

    In my code I am having problems with it recognizing the stack, and also passing it down parameters as well as recognizing everything in my 2nd method.

    import java.util.Scanner;
    import java.io.*;
    import java.util.Stack.*;
    import java.util.StringTokenizer;
     
    class Proj31610{
     
    public static void main(String args[]){
    String data=args[0];
    File filereader=new File(data); 
    Scanner in=new Scanner(filereader);
     
    String collect;
    Stack<Integer> holditdown=new Stack<Integer>();   //Float for the div?
     
    while(in.hasNext()){
     
    collect=in.nextLine();
    givmehabreak(collect, holditdown);
     
    		   }//end of the while loop 
     
     
     
    }//end of main method
     
     
    public void givmehabreak(string collects, Stack carrys){
    String tolken1, tolken2;
    int tolkentaker;
    StringTokenizer st= new StringTokenizer(collects);
     
    while(st.hasMoreTokens()){                    // ?
    tolken1=st.nexttoken;
    tolken2=st.nexttoken;
    		      }
    try{
    tolkentaker=Integer.parseInt(tolken2);                      //?
    }
     
    catch(ParseException e){
    System.out.println("There was no Integer here");
    }
     
    if(tolken1.equalsIgnoreCase("CLR"))
    clrStack(carrys);
     
    else if(tolken1.equalsIgnoreCase("HlT")){
    System.out.println("Machine Halted sir. ");
    System.out(0);
    					}
    else if(tolken1.equalsIgnoreCase("nEG"))
    negstack(carrys);
     
    else if(tolken1.equalsIgnoreCase("AdD"))
    addStack(carrys);
     
    else if(tolken1.equalsIgnoreCase("Sub"))
    subStack(carrys);
     
    else if(tolken1.equalsIgnoreCase("MuL"))
    mulStack(carrys);
     
    else if(tolken1.equalsIgnoreCase("dIv"))
    try{
    	divStack(carrys);
    }
    catch (DivideByZeroException e){
     
    System.out.println(" You cannot divide... anything by zero. ");
    }
     
    else if(tolken1.equalsIgnoreCase("LDC"))
    ldcStack(tolkentaker, carrys);
     
    else if(tolken1.equalsIgnoreCase("INp"))
    inpStack(carrys);
     
    else if(tolken1.equalsIgnoreCase("OuT"))
    outStack(carrys);
     
    else if(tolken1.equalsIgnoreCase("NlN"))
    System.out.println("");
     
    else if(tolken1.equalsIgnoreCase("dBg"))
    dgbStack(carrys);
     
    else
    System.out.println("Warning - illegal command '" + collects + "' ignored, good day sir. ");
     
     
    }//end of givemehabreak 
     
     
    public void clrStack(stack hey){
     
    while(hey.size() > 0)
    hey.pop();
     
    }//end of clear stack method
     
    public void negStack(stack reception){
    int reeves;
    if(reception.size() >0){
     
    reeves=reception.pop();
    reeves=reeves*-1;
    reception.push(reeves);
    }
     
    else
    System.out(0);
     
    }//end of negate stack method
     
    public void addStack(stack reception){
    int manny, harris, td;
     
    if(reception.size() > 2){
    manny=reception.pop();
    harris=reception.pop();
    td=manny+harris;
    reception.push(td);
    			}
    else
    System.out(0);
     
    }//end of add stack method
     
    public void subStack(stack reception){
    int rose, sat, nostats;
     
    if(reception.size() > 2){
    sat=reception.pop();
    rose=reception.pop();
    nostats=sat-rose;
    reception.push(nostats);
    			}
     
    else
    System.out(0);
    }//end subtract stack method 
     
    public void mulStack(stack reception){
    int twentwo, fourfive, lega;
     
    if(reception.size() > 2){
    twentwo=reception.pop();
    fourfive=reception.pop();
    lega=fourfive*twentwo;
    reception.push(lega);
    			}
     
    else
    System.out(0);
     
    }//end of multiply stack method
     
    public void divStack(stack reception){
    int ss, vc, dw;
     
    if(reception.size() > 2){
    ss=reception.pop();
    vc=reception.pop();
    dw=vc/ss;
    reception.push(dw);
    			}
    else
    System.out(0);
     
    }//end of divide stack method
     
    public void ldcStack(int locken, stack reception){
     
    reception.push(locken);
     
    }//end of LDC stack
     
     
     
    public void inpStack(stack reception){
    int masta;
     
     
    Scanner toldya= new Scanner(System.in);
    System.out.println("Enter that. ");
    masta=toldya.nextInt();
    reception.push(masta);
     
     
    }//end of input method
     
     
    public void outStack(stack reception){
    int tells;
     
    if(reception.size() > 1){
    tells=reception.pop();
    System.out.println(tells);
    			}
     
    else
    System.out(0);
     
     
    }//end of output, new line method
     
     
     
    public void dbgStack(stack reception){      //Will it just leave the stack empty?
     
    System.out.println(reception);
     
    }//end of Debug stack
     
    }//end of class Proj31610
    Errors I get alot of cannot find symbols, I confused.
    Last edited by JavaPF; October 10th, 2011 at 05:44 AM. Reason: You must use highlight or code tags!!

  2. #2
    mmm.. coffee JavaPF's Avatar
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    Default Re: Please help, thanks.

    There are so many problems with this code.

    You don't have all the correct imports imported and you have made silly mistakes with method capitalization.
    For example, st.nexttoken(); needs to be st.nextToken();

    Certain methods need to be static etc.

    What IDE do you use? I personally use Eclipse and this points out all these issues clearly.
    Your going to need to go through this and touch up on your basic Java knowledge. Good luck.
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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