arrays

[durdanto]

Hi, i am trying to create program for Tax

but i am having problem creating the tax formula using arrays
Output should be something like the following:

Tax filing status can be as follows:
(0-single, 1-married, 2-widowed, 3-living common-law, 4-to quit this program)
Enter the filing status: 0
Enter the taxable income in $ 400000
Tax is $117683.5


problem is that it works only if income is 40000$
it does work properly if input is anything else
plz help

import java.util.Scanner;
public class ComputeTax {

	/**
	 * @param args
	 */
	public static void main(String[] args) 
	{
		//Scanner
		Scanner myKeyboard = new Scanner(System.in);
		
		//Welcome message:
		System.out.println("Welcome to Revenue Agency Taxation");
		System.out.println("\nTax filing status can be as follows:" +
				"\n(0-single, 1-married, 2-widowed, 2-living common-law, 4-to quit this program)");
		System.out.print("\nEnter the filing status: ");
		
		//program starting algorithm:
		
		double [] rates= {0.10, 0.15, 0.25, 0.28, 0.33, 0.35}; 
		double[][] brackets = {
							{8350, 33950, 82250, 171550, 372950},   //single
							{16700, 20885, 67900, 137050, 372950},  // Married
							{8350, 33950, 68525, 104425, 186475},   // Widowed
							{11950, 45500, 117450, 190200, 372950}  // Living common-law
							};
		
		
		
		int i = myKeyboard.nextInt();
		while (i<4 & i>=0)
		{
			
			System.out.print("\nEnter the taxable income in $ ");
			double income = myKeyboard.nextDouble();
			
			
			
			//tax calculation:
			double tax = 0;
			
				{
					if(i==0) //single
					{
					//	for (i=0; income > brackets[0][4]; i++ )
						 tax = brackets[ 0][ 0] * rates[ 0] +
						( brackets[ 0][ 1] - brackets[ 0][ 0]) * rates[ 1] +
						( brackets[ 0][ 2] - brackets[ 0][ 1]) * rates[ 2] +
						( brackets[ 0][ 3] - brackets[ 0][ 2]) * rates[ 3] +
						( brackets[ 0][ 4] - brackets[ 0][ 3]) * rates[ 4] +
						( income - brackets[ 0][ 4]) * rates[ 5];
					}	 
					if(i==1) // Married
						 tax = brackets[ 1][ 0] * rates[ 0] +
						( brackets[ 1][ 1] - brackets[ 1][ 0]) * rates[ 1] +
						( brackets[ 1][ 2] - brackets[ 1][ 1]) * rates[ 2] +
						( brackets[ 1][ 3] - brackets[ 1][ 2]) * rates[ 3] +
						( brackets[ 1][ 4] - brackets[ 1][ 3]) * rates[ 4] +
						( income - brackets[ 1][ 4]) * rates[ 5];
					if(i==2) // Widowed
						 tax = brackets[ 0][ 0] * rates[ 0] +
						( brackets[ 2][ 1] - brackets[ 2][ 0]) * rates[ 1] +
						( brackets[ 2][ 2] - brackets[ 2][ 1]) * rates[ 2] +
						( brackets[ 2][ 3] - brackets[ 2][ 2]) * rates[ 3] +
						( brackets[ 2][ 4] - brackets[ 2][ 3]) * rates[ 4] +
						( income - brackets[ 2][ 4]) * rates[ 5];
					if(i==3) // Living common-law
						 tax = brackets[ 3][ 0] * rates[ 0] +
						( brackets[ 3][ 1] - brackets[ 3][ 0]) * rates[ 1] +
						( brackets[ 3][ 2] - brackets[ 3][ 1]) * rates[ 2] +
						( brackets[ 3][ 3] - brackets[ 3][ 2]) * rates[ 3] +
						( brackets[ 3][ 4] - brackets[ 3][ 3]) * rates[ 4] +
						( income - brackets[ 3][ 4]) * rates[ 5];
					
				}
				
			
				System.out.println("\nTax is $" + tax );
		}
		System.out.println("\nGood Bye" );
	}

}

[ozzyman]

It would be better if you use Objects rather than Arrays. You can do this better with an Enum set. Please see how I solved this tax calculation solution for more details:

Problem working out Assignment