finished lab

ConversionTool.ctxt

@@ -0,0 +1,23 @@
+#BlueJ class context
+comment0.target=ConversionTool
+comment1.params=args
+comment1.target=void\ main(java.lang.String[])
+comment10.params=value
+comment10.target=boolean\ checkNegative(float)
+comment2.params=centimeters
+comment2.target=float\ CentimetersToInches(float)
+comment3.params=inches
+comment3.target=float\ InchesToCentimeters(float)
+comment4.params=feet
+comment4.target=float\ FeetToMeters(float)
+comment5.params=meters
+comment5.target=float\ MetersToFeet(float)
+comment6.params=celsius
+comment6.target=float\ CelsiusToFahrenheit(float)
+comment7.params=fahrenheit
+comment7.target=float\ FahrenheitToCelsius(float)
+comment8.params=mph
+comment8.target=float\ MphToKph(float)
+comment9.params=kph
+comment9.target=float\ KphToMph(float)
+numComments=11

ConversionTool.java

@@ -1,21 +1,54 @@
 public class ConversionTool {
-
+    private static final float CM_PER_INCH = 2.54f;
+    private static final float FT_PER_M = 3.28084f;
+    private static final float KM_PER_MILE = 1.60934f;
 
     public static void main(String[] args){}
 
-    public static float CentimetersToInches(float centimeters){}
-
-    public static float InchesToCentimeters(float inches){}
-
-    public static float FeetToMeters(float feet){}
-
-    public static float MetersToFeet(float meters){}
-
-    public static float CelsiusToFahrenheit(float celsius){}
-
-    public static float FahrenheitToCelsius(float fahrenheit){}
-
-    public static float MphToKph(float mph){}
-
-    public static float KphToMph(float kph){}
+    public static float CentimetersToInches(float centimeters){
+        if (checkNegative(centimeters)) return 0f;
+        return centimeters / CM_PER_INCH;
+    }
+
+    public static float InchesToCentimeters(float inches){
+        if (checkNegative(inches)) return 0f;
+        return inches * CM_PER_INCH;
+    }
+
+    public static float FeetToMeters(float feet){
+        if (checkNegative(feet)) return 0f;
+        return feet / FT_PER_M;
+    }
+
+    public static float MetersToFeet(float meters){
+        if (checkNegative(meters)) return 0f;
+        return meters * FT_PER_M;
+    }
+
+    public static float CelsiusToFahrenheit(float celsius){
+        if (checkNegative(celsius)) return 0f;
+        return celsius * 1.8f + 32.0f;
+    }
+
+    public static float FahrenheitToCelsius(float fahrenheit){
+        if (checkNegative(fahrenheit)) return 0f;
+        return (fahrenheit - 32) / 1.8f;
+    }
+
+    public static float MphToKph(float mph){
+        if (checkNegative(mph)) return 0f;
+        return mph * KM_PER_MILE;
+    }
+
+    public static float KphToMph(float kph){
+        if (checkNegative(kph)) return 0f;
+        return kph / KM_PER_MILE;
+    }
+    
+    private static boolean checkNegative(float value) {
+        if (value < 0) {
+            return true;
+        }
+        return false;
+    }
 }

ConversionToolSpec.ctxt

@@ -0,0 +1,43 @@
+#BlueJ class context
+comment0.target=ConversionToolSpec
+comment1.params=
+comment1.target=void\ shouldConvertCentimetersToInches()
+comment10.params=
+comment10.target=void\ shouldConvertMetersToFeet()
+comment11.params=
+comment11.target=void\ shouldConvertZeroMetersToZeroFeet()
+comment12.params=
+comment12.target=void\ shouldConvertNegativeMetersToZeroFeet()
+comment13.params=
+comment13.target=void\ shouldConvertFahrenheitToCelsius()
+comment14.params=
+comment14.target=void\ shouldConvertCelsiusToFahrenheit()
+comment15.params=
+comment15.target=void\ shouldConvertMphToKph()
+comment16.params=
+comment16.target=void\ shouldConvertZeroMphToZeroKph()
+comment17.params=
+comment17.target=void\ shouldConvertNegativeMphToZeroKph()
+comment18.params=
+comment18.target=void\ shouldConvertKphToMph()
+comment19.params=
+comment19.target=void\ shouldConvertZeroKphToZeroMph()
+comment2.params=
+comment2.target=void\ shouldConvertZeroCentimetersToZeroInches()
+comment20.params=
+comment20.target=void\ shouldConvertNegativeKphToZeroMph()
+comment3.params=
+comment3.target=void\ shouldConvertNegativeCentimetersToZeroInches()
+comment4.params=
+comment4.target=void\ shouldConvertInchesToCentimeters()
+comment5.params=
+comment5.target=void\ shouldConvertZeroInchesToZeroCentimeters()
+comment6.params=
+comment6.target=void\ shouldConvertNegativeInchesToZeroCentimeters()
+comment7.params=
+comment7.target=void\ shouldConvertFeetToMeters()
+comment8.params=
+comment8.target=void\ shouldConvertZeroFeetToZeroMeters()
+comment9.params=
+comment9.target=void\ shouldConvertNegativeFeetToZeroMeters()
+numComments=21

package.bluej

@@ -2,10 +2,10 @@
 dependency1.from=ConversionToolSpec
 dependency1.to=ConversionTool
 dependency1.type=UsesDependency
-editor.fx.0.height=722
+editor.fx.0.height=709
 editor.fx.0.width=800
-editor.fx.0.x=320
-editor.fx.0.y=75
+editor.fx.0.x=453
+editor.fx.0.y=26
 objectbench.height=164
 objectbench.width=776
 package.divider.horizontal=0.6
@@ -13,7 +13,7 @@ package.divider.vertical=0.6845018450184502
 package.editor.height=364
 package.editor.width=674
 package.editor.x=419
-package.editor.y=221
+package.editor.y=132
 package.frame.height=600
 package.frame.width=800
 package.numDependencies=1
@@ -29,7 +29,7 @@ readme.y=10
 target1.height=50
 target1.name=ConversionToolSpec
 target1.showInterface=false
-target1.type=ClassTarget
+target1.type=UnitTestTargetJunit4
 target1.width=150
 target1.x=130
 target1.y=10