problem with operator in case

[jimJohnson]

Ok I really am stuck on this problem. It is in my case switch and been trying to figure this error out all morning and was wanting to know if anyone would be able to help me with it.

The errors are:

F:\JAVA\PetAdvice.java:55: operator && cannot be applied to int,boolean
if ((housing = 1) && (hours>=18))
^
F:\JAVA\PetAdvice.java:59: operator && cannot be applied to int,boolean
if ((housing = 1) && (hours>=10) && (hours < 18))
^
F:\JAVA\PetAdvice.java:63: operator && cannot be applied to int,boolean
if ((housing = 1) && (hours < 10))
^
F:\JAVA\PetAdvice.java:67: operator && cannot be applied to int,boolean
if ((housing = 2) && (hours >= 10))
^
F:\JAVA\PetAdvice.java:71: operator && cannot be applied to int,boolean
if ((housing = 2) && (hours < 10))
^
F:\JAVA\PetAdvice.java:75: operator && cannot be applied to int,boolean
if ((housing = 3) && (hours >= 6))
^
F:\JAVA\PetAdvice.java:79: operator && cannot be applied to int,boolean
if ((housing = 3) && (hours < 6))
^


I know that it has to do something with the && but everything looks right to me well as good as a beginner would think it would and going to post my code and if anyone has an idea please shoot

/*

Programmer:	Jim Johnson
Date:		3/18/08
Filename:	PetAdvice.java
Purpose:	This program determines the best choice for a pet using five methods: getHousing(), getHours(), getPet(), output(), and finish()

*/

//packages to import

import javax.swing.JOptionPane;


public class PetAdvice
{
	public static void main(String[] args)
	{
		//declare class variables
		int housing;
		double hours;
		String pet;

		//call method
		housing = getHousing();
		hours = getHours();
		pet = getPet(hours, housing);
		output(pet);
		finish();
	}//end main()

		//the output() method displays the pet recommended
			public static void output(String pet)
			{
;

				//display output
				JOptionPane.showMessageDialog(null, "According to your requirements, I would recommend a " + pet, "Pet Advice: Recommendation", JOptionPane.INFORMATION_MESSAGE);

		}// end output



			//the getPet() method accepts the housing and hours and returns a pet
			public static String getPet(double hours, int housing)
			{
				//declare method variables

				String pet;


				switch(housing)
				{
					case 1: //pot-bellied pig
					if ((housing = 1) && (hours>=18))
					pet = "pot-bellied pig";
					break;
					case 2: //dog
					if ((housing = 1) && (hours>=10) && (hours < 18))
					pet = "dog";
					break;
					case 3: //snake
					if ((housing = 1) && (hours < 10))
					pet = "snake";
					break;
					case 4: //cat
					if ((housing = 2) && (hours >= 10))
					pet = "cat";
					break;
					case 5: //hamster
					if ((housing = 2) && (hours < 10))
					pet = "hamster";
					break;
					case 6: //fish
					if ((housing = 3) && (hours >= 6))
					pet = "fish";
					break;
					case 7: //ant farm
					if ((housing = 3) && (hours < 6))
					pet = "ant farm";
					break;

				}//end switch


				//.return value to the calling method
				return pet;

		}//end getComm




//the getHours() method asks the user to input hours and validate it

	public static double getHours()
	{
		//declare method variables
		double hours = 0.0;
		boolean done = false;

		//loop while not done
		while(!done)
		{
			String answer = JOptionPane.showInputDialog(null, "Enter the average number of hours\nyou are home per week:", "Pet Advice: Hours", JOptionPane.QUESTION_MESSAGE);

			//See if the cancel buttom was clicked....this will only work if the input is brought in as a a string
			if(answer == null) finish();

			//validate the input
			try
			{
				//is answer a valid double
				hours = Double.parseDouble(answer);

				//is sales reasonable?
				if(hours <= 0) throw new NumberFormatException();
				//if the value is valid and reasonable, get out of the while loop
				else done = true;
			} //end try
			catch(NumberFormatException e)
			{
				JOptionPane.showMessageDialog(null, "Your entry was not in the proper format.\nPlease enter a positive number for hours", "Error", JOptionPane. ERROR_MESSAGE);

			} //end catch

	}	//end while


		return hours;
	} //end getHours()

		//the getHousing() method retries a housing option from the user and validates it.
		public static int getHousing()
		{
			//declare method variables
			int housing = 0;
			boolean done = false;

			//loop while not done
			while(!done)
			{
				try
				{
					String message = JOptionPane.showInputDialog(null, "Enter your type of residence:" + "\n\n1) House\n2) Apartment\n3) Dormitory\n4) Quit the Application\n", "Pet Advice: Housing", JOptionPane.QUESTION_MESSAGE);

					housing = Integer.parseInt(JOptionPane.showInputDialog(null,message));

					//test for valid housing 1, 2, 3, or 4
					if(housing<1 || housing>4) throw new NumberFormatException();
					else done = true;
				}
				catch(NumberFormatException e)
				{
					JOptionPane.showMessageDialog(null,"Please enter a 1, 2, 3, or 4.", "Error", JOptionPane.INFORMATION_MESSAGE);
				}
			}
			return housing;
	}


	//the finish() method successfully terminates the application
	public static void finish()
	{
		System.exit(0);
	} //end finish()


} //end class

[hardwired]

if ((housing = 1) && (hours>=18))

housing = 1 is an assignment:
It assigns the value of one (1) to the "housing" variable.
To make this statement a boolean use the "==" operator:

if ((housing == 1) && (hours >= 18))
// or
if (housing == 1 && hours >= 18)

[jimJohnson]

haha god damnit I should have known that thanks man appreciate it