If else statement trouble

I cannot get my if then statements to work correctly and I cannot figure out why. any help would be greatl appreciated.

import java.text.DecimalFormat;
import java.util.Scanner;

public class Lab02
{
public static void main(String args[])
{
    Scanner input = new Scanner(System.in);

    System.out.print("Number of Exemptions: ");
    double NE = input.nextDouble();

    System.out.print("Gross Salary: ");
    double GS = input.nextDouble();

    System.out.print("Interest Income: ");
    double II = input.nextDouble();

    System.out.print("Capital Gains: ");
    double CG = input.nextDouble();

    System.out.print("Charitable Contributions: ");
    double CC = input.nextDouble();

    double TI = GS + II + CG;
    System.out.printf("%nTotal Income: %12.2f%n", TI);

    double AI = TI - (NE * 1500) - CC;
    System.out.printf("Adjusted Income: %9.2f%n", AI);

    double TT1;
    double TT2;
    double TT3;
    double TT;
    if ((AI > 10000 && AI <= 32000)){
    //TT1 = ((15/100) * (32000 - 10000));}
    //else if ((AI<= 32000)){
    TT1 = ((15/100) * (AI - 10000));}
    else TT1 = 0;
    if ((AI > 32000 && AI <= 50000)){
    //TT2 = ((23/100) * (50000 - 32000));}
    //else if ((AI <= 50000)){
    TT2 = ((23/100) * (AI - 32000));}
    else TT2 = 0;
    if ((AI > 50000)){
    TT3 = ((28/100) * (AI - 50000));}
    else TT3 = 0;

    System.out.println(TT1);
    System.out.println(TT2);
    System.out.println(TT3);
    TT = TT1 + TT2 + TT3;
    System.out.printf("Total Tax: %14.2f%n", TT);
}

I do have some extra stuff in there that i was also working with to try and figure out my problem.