Thread: Java stock project help

i need help on a java project, i am still a beginner so i havent learnt alot of advanced techniques yet,i have taken a screenshot of the questions as it is hard to explain it.





and i have done these, i am stuck on if the user enters choice 2 the program will display existing stock information and prompt user to update share price,help is appreciated

/*Chin Zhi Qiang
 *Computer programming Project
 */
import java.util.Scanner;
 
	class ChinZhiQiang {
  		static final double capital = 100000.00;//starting capital
 
		public static void main(String args[]){
			/////Variables////
			Scanner myScanner = new Scanner(System.in);
			int choice;		
 
		    /////Menu/////
			System.out.println("\tStock Portfolio\t");
			System.out.println("======================================");	
			System.out.println("1) Select 1 to create stock portfolio.");
			System.out.println("2) Select 2 to update share price.");
			System.out.println("3) Select 3 to exit.");
			/////Prompt Input/////
			System.out.print("Please enter your choice(1 - 3): ");
			choice = myScanner.nextInt();
 
			if(choice == 1){
				portFolio();
			}
			if(choice == 2){
				updateSharePrice();
			}
			if(choice == 3){
				System.out.println("Thanks for using");
			}
		}
 
	static  void portFolio(){/////portFolio method/////
		Scanner portFolioScanner = new Scanner(System.in);
		int stocksToCreate =0;
		double stockUnitPrice = 0;
		int stockUnit = 0;
		String stockName, stockSym;
		int modify;
 
			System.out.print("Number of stocks in your portfolio (max 99): ");
			stocksToCreate = portFolioScanner.nextInt();
			System.out.println();//line break
				do
				{
 
					System.out.print("Please Enter Stock name ( between 8 and 14 characters ): ");
					stockName = portFolioScanner.next();
					System.out.print("Please Enter 3 or 4 letter stock symbol: ");
					stockSym = portFolioScanner.next();
					System.out.print("Please Enter unit price: ");
					stockUnitPrice = portFolioScanner.nextDouble();
					System.out.print("Please Enter no. of units bought: ");
					stockUnit = portFolioScanner.nextInt();
					System.out.println();// line break
 
					System.out.println("You have entered: ");
					System.out.println(stockName+"\t"+stockSym+"\t"+stockUnit+" units\t"+"@ "+stockUnitPrice);
 
					System.out.print("If Ok, enter 1 else enter 0 to modify: ");
					modify = portFolioScanner.nextInt();
					System.out.println();
 
				}while(modify == 0);
 
			System.out.print("--- Accepted --- Cash Value Left $:");
			System.out.print(capital - (stockUnit * stockUnitPrice));		
			System.out.print("\n************************************\n");	
 
 
	}/////End of portFolio method/////
 
	static void updateSharePrice(){/////Start of updateSharePrice method/////
			System.out.println("Here is your current list of stocks : \n");
			System.out.print("\t\t\t\tBought Current Stock\n");
			System.out.println("Stock Name\tSymbol\tUnits\tPrice\tPrice\tValue ");
			System.out.print("----------\t------\t-----\t-----\t-----\t-----\n");
		//	System.out.print(stockName);
 
 
	}	
 
}

Hello lotus,

Sorry for the late reply on this.

To start, you need to make it so the program doesn't terminate after each option is complete.
To be able to do number 2, you need to take in and store the information from number 1 and continue from there.

You can stop the program from terminating by putting a while loop in the main method like this:

/*Chin Zhi Qiang
 *Computer programming Project
 */
import java.util.Scanner;
 
    class ChinZhiQiang {
          static final double capital = 100000.00;//starting capital
 
        public static void main(String args[]){
            /////Variables////
            Scanner myScanner = new Scanner(System.in);
            int choice;        
 
            /////Menu/////
            System.out.println("\tStock Portfolio\t");
            System.out.println("======================================");    
            System.out.println("1) Select 1 to create stock portfolio.");
            System.out.println("2) Select 2 to update share price.");
            System.out.println("3) Select 3 to exit.");
            /////Prompt Input/////
            System.out.print("Please enter your choice(1 - 3): ");
 
            [B]while(myScanner.hasNext()){[/B]
 
            choice = myScanner.nextInt();
 
            if(choice == 1){
                portFolio();
            }
            if(choice == 2){
                updateSharePrice();
            }
            if(choice == 3){
                System.out.println("Thanks for using");
            }
       [B] }[/B]
    }
    static  void portFolio(){/////portFolio method/////
        Scanner portFolioScanner = new Scanner(System.in);
        int stocksToCreate =0;
        double stockUnitPrice = 0;
        int stockUnit = 0;
        String stockName, stockSym;
        int modify;
 
            System.out.print("Number of stocks in your portfolio (max 99): ");
            stocksToCreate = portFolioScanner.nextInt();
            System.out.println();//line break
                do
                {
 
                    System.out.print("Please Enter Stock name ( between 8 and 14 characters ): ");
                    stockName = portFolioScanner.next();
                    System.out.print("Please Enter 3 or 4 letter stock symbol: ");
                    stockSym = portFolioScanner.next();
                    System.out.print("Please Enter unit price: ");
                    stockUnitPrice = portFolioScanner.nextDouble();
                    System.out.print("Please Enter no. of units bought: ");
                    stockUnit = portFolioScanner.nextInt();
                    System.out.println();// line break
 
                    System.out.println("You have entered: ");
                    System.out.println(stockName+"\t"+stockSym+"\t"+stockUnit+" units\t"+"@ "+stockUnitPrice);
 
                    System.out.print("If Ok, enter 1 else enter 0 to modify: ");
                    modify = portFolioScanner.nextInt();
                    System.out.println();
 
                }while(modify == 0);
 
            System.out.print("--- Accepted --- Cash Value Left $:");
            System.out.print(capital - (stockUnit * stockUnitPrice));        
            System.out.print("\n************************************\n");    
 
 
    }/////End of portFolio method/////
 
    static void updateSharePrice(){/////Start of updateSharePrice method/////
            System.out.println("Here is your current list of stocks : \n");
            System.out.print("\t\t\t\tBought Current Stock\n");
            System.out.println("Stock Name\tSymbol\tUnits\tPrice\tPrice\tValue ");
            System.out.print("----------\t------\t-----\t-----\t-----\t-----\n");
        //    System.out.print(stockName);
 
 
    }    
 
}

I'm looking into part 2 now..