righttriangle.java

Java code where user can enter the height and base of a triangle and the program will calculate the

import java.util.Scanner ;
import java.lang.Math ;

public class RightTriangle {
   private double base   = 0.0 ;
	private double height = 0.0 ;
	
	RightTriangle() {
	   base   = askForDoubleVersion2("Enter base of triangle: ") ;
		height = askForDoubleVersion2("Enter height of triangle: ") ;
	}
	
	RightTriangle (double base, double height) {
	   setBase (base) ;
		setHeight (height) ;
	}
	
	public static double askForDoubleVersion2(String message) {
   Scanner keyboard ;
   double aValue ;

      keyboard = new Scanner(System.in) ;
	   System.out.print(message) ;
	   aValue = keyboard.nextDouble() ;
	  
	   return aValue ;	 
	}

   public double getBase() {
	   return base ;
	}
	
	public double getHeight() {
	   return height ;
	}

   public boolean isValid() {
	   boolean returnValue = false ;
		   if ((base > 0.0) && (height > 0.0))
		      returnValue = true ;
		return returnValue ;
	}

	public void setBase(double inBase) {
	   if (inBase > 0)
		   base = inBase ;
	}
		
	public void setHeight(double inHeight) {
	   if (inHeight > 0)
		   height = inHeight ;
	}

   double returnArea() {
	   double area ;
		area = (base * height) * 0.5 ;
		return area ;
	}
	
	double returnPerimeter() {
	   double perimeter ;
		double hypotenuse ;
			hypotenuse = Math.sqrt((base * base) + (height * height)) ;
			perimeter  = base + height + hypotenuse ;
			return perimeter ;
	}	
}
	
public class RightTriangleMain {		
	public static int compareTriangles(RightTriangle left, RightTriangle right) {
   int returnValue   = 0 ;
		if ( (left.getBase() == right.getBase() ) && (left.getHeight() == right.getHeight() ) )
			returnValue = 1 ;
	   return returnValue ;
	}
	

	public static void main(String[] args) {
	RightTriangle left             = null ;
	RightTriangle right            = null ;
	int           comparisonResult = -1 ;
		
	   left = new RightTriangle() ;
		if (left.isValid() ) {
		   right = new RightTriangle(4.0,5.0) ;
			if (right.isValid() ) {
			   if ( (comparisonResult = compareTriangles(left,right)) == 1)
				   System.out.println("Triangles are equal") ;
			   else
				   System.out.println("Triangles are not equal") ;
   		}
		}	
  	}
	
}