Java

Quick Project Question{

Please support our Java advertiser: Programming Forums - DaniWeb Sister Site

•

Join Date: Dec 2004

Posts: 22

Reputation: blackbabydoll is an unknown quantity at this point

Solved Threads: 0

blackbabydoll blackbabydoll is offline

Offline

Newbie Poster

Quick Project Question{

Dec 1st, 2005

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
import java.io.*;
import java.math.*;
import java.util.*;
 
 
public class GrowthofaFunction 
{
 
	public int calculateFunction(int x) {
		return 0;
	}
	/**
	 * @param args
	 */
	public static void main(String[] args) 
	{
 
		public void calculateFunction();
		{
 
			final int x;
			final int y1;
			final int y2;
			final int y;
 
			Scanner stdin = new Scanner(System.in);
 
			System.out.print("Enter value for x: ");
			x = stdin.nextInt();
 
			y1 = x + (x*x);
			y2 =(int) (Math.pow(2,x));
			y = y1 + y2;
			return y;
 
 
             //	printStars has input x
 
			for (int i = 0; i <= 0; i++)
			   {
				   y = stdin.nextInt();
				   i = y/10;
			   }
			      System.out.print("*");
			      return y;
		}	 
 
	}	
}
import java.io.*;
import java.math.*;
import java.util.*;


public class GrowthofaFunction 
{

	public int calculateFunction(int x) {
		return 0;
	}
	/**
	 * @param args
	 */
	public static void main(String[] args) 
	{
		
		public void calculateFunction();
		{
			
			final int x;
			final int y1;
			final int y2;
			final int y;
			
			Scanner stdin = new Scanner(System.in);
			
			System.out.print("Enter value for x: ");
			x = stdin.nextInt();
			
			y1 = x + (x*x);
			y2 =(int) (Math.pow(2,x));
			y = y1 + y2;
			return y;
			
			
             //	printStars has input x
			
			for (int i = 0; i <= 0; i++)
			   {
				   y = stdin.nextInt();
				   i = y/10;
			   }
			      System.out.print("*");
			      return y;
		}	 
			      
	}	
}

There is something wrong with my code and I still can't figure it out. Can someone tell me? I am just suppose to calculate an function and printStars.

•

Join Date: Dec 2004

Posts: 22

Reputation: blackbabydoll is an unknown quantity at this point

Solved Threads: 0

blackbabydoll blackbabydoll is offline

Offline

Newbie Poster

Re: Quick Project Question{

Dec 1st, 2005

•

Exception in thread "main" java.util.regex.PatternSyntaxException: Unclosed character class near index 528
(([-+]?(((((?i)[]|\p{javaDigit})++)|([\p{javaDigit}&&[^0]]((?i)[]|\p{javaDigit})?((?i)[]|\p{javaDigit})?(\,((?i)[]|\p{javaDigit})((?i)[]|\p{javaDigit})((?i)[]|\p{javaDigit}))+)))))|(((((?i)[]|\p{javaDigit})++)|([\p{javaDigit}&&[^0]]((?i)[]|\p{javaDigit})?((?i)[]|\p{javaDigit})?(\,((?i)[]|\p{javaDigit})((?i)[]|\p{javaDigit})((?i)[]|\p{javaDigit}))+)))|(\Q-\E((((?i)[]|\p{javaDigit})++)|([\p{javaDigit}&&[^0]]((?i)[]|\p{javaDigit})?((?i)[]|\p{javaDigit})?(\,((?i)[]|\p{javaDigit})((?i)[]|\p{javaDigit})((?i)[]|\p{javaDigit}))+)))
^
at java.util.regex.Pattern.error(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
at java.util.regex.Pattern.sequence(Unknown Source)
at java.util.regex.Pattern.expr(Unknown Source)
at java.util.regex.Pattern.group0(Unknown Source)
at java.util.regex.Pattern.sequence(Unknown Source)
at java.util.regex.Pattern.expr(Unknown Source)
at java.util.regex.Pattern.group0(Unknown Source)
at java.util.regex.Pattern.sequence(Unknown Source)
at java.util.regex.Pattern.expr(Unknown Source)
at java.util.regex.Pattern.group0(Unknown Source)
at java.util.regex.Pattern.sequence(Unknown Source)
at java.util.regex.Pattern.expr(Unknown Source)
at java.util.regex.Pattern.group0(Unknown Source)
at java.util.regex.Pattern.sequence(Unknown Source)
at java.util.regex.Pattern.expr(Unknown Source)
at java.util.regex.Pattern.group0(Unknown Source)
at java.util.regex.Pattern.sequence(Unknown Source)
at java.util.regex.Pattern.expr(Unknown Source)
at java.util.regex.Pattern.group0(Unknown Source)
at java.util.regex.Pattern.sequence(Unknown Source)
at java.util.regex.Pattern.expr(Unknown Source)
at java.util.regex.Pattern.compile(Unknown Source)
at java.util.regex.Pattern.<init>(Unknown Source)
at java.util.regex.Pattern.compile(Unknown Source)
at java.util.Scanner$1.create(Unknown Source)
at java.util.Scanner$1.create(Unknown Source)
at sun.misc.LRUCache.forName(Unknown Source)
at java.util.Scanner.integerPattern(Unknown Source)
at java.util.Scanner.nextInt(Unknown Source)
at GrowthofaFunction.main(GrowthofaFunction.java:29)

THAT IS MY ERROR

•

Join Date: Dec 2004

Posts: 22

Reputation: blackbabydoll is an unknown quantity at this point

Solved Threads: 0

blackbabydoll blackbabydoll is offline

Offline

Newbie Poster

Re: Quick Project Question{

Dec 1st, 2005

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
import java.util.Scanner;
 
 
public class GrowthofaFunction 
{
	//Method to calculate function
	public static int calculateFunction(int x) 
	{	
		int result = 0;
 
		System.out.print("Enter value for x: ");
 
		Scanner stdin = new Scanner(System.in);
		x = stdin.nextInt();
		result= (x + (x*x) + (int)(Math.pow(2,x)));
		return result;
	}
 
	//Method to printStars
	public static void printStars(int numberofStars)
	{
		for (int i = 0; i <= numberofStars; i++)
		   {
			for (int j = 0; j >=1; j++)
			{
			  int x = 0;
			  numberofStars = (calculateFunction(x)/10);
			  System.out.print("*");
			}
		   }
    }
 
 
 
	public static void main(String[] args) 
	{
		int x = 0;
		int numberofStars = 0;
 
		calculateFunction(x);
 
		printStars(numberofStars);
		System.out.println(" ");
 
 
 
 
	}
 
}
import java.util.Scanner;


public class GrowthofaFunction 
{
	//Method to calculate function
	public static int calculateFunction(int x) 
	{	
		int result = 0;
		
		System.out.print("Enter value for x: ");
		
		Scanner stdin = new Scanner(System.in);
		x = stdin.nextInt();
		result= (x + (x*x) + (int)(Math.pow(2,x)));
		return result;
	}
	
	//Method to printStars
	public static void printStars(int numberofStars)
	{
		for (int i = 0; i <= numberofStars; i++)
		   {
			for (int j = 0; j >=1; j++)
			{
			  int x = 0;
			  numberofStars = (calculateFunction(x)/10);
			  System.out.print("*");
			}
		   }
    }



	public static void main(String[] args) 
	{
		int x = 0;
		int numberofStars = 0;

		calculateFunction(x);
		
		printStars(numberofStars);
		System.out.println(" ");



			      
	}
		
}

Ok the only problem now is the stars will not print.

•

Join Date: Jun 2004

Posts: 2,108

Reputation: server_crash is on a distinguished road

Solved Threads: 18

server_crash server_crash is offline

Offline

Postaholic

Re: Quick Project Question{

Dec 1st, 2005

Take a look at your loop:

for (int j = 0; j >=1; j++)

Your condition:

j>=1

This is the same as saying "loop while that j is greater than, or equal to 1. You start your counter j=0 which means j is zero (not greater than 1). It never executes the loop.