oppgave: train

src/main/java/oving7/train/TrainCar.java

@@ -5,7 +5,7 @@ package oving7.train;
  */
 public class TrainCar {
 
-    // TODO: Add fields here
+    private int deadWeight;
 
     /**
      * Constructor for a train car.
@@ -16,7 +16,10 @@ public class TrainCar {
      * @see TrainCarTest#testDeadWeight()
      */
     public TrainCar(int deadWeight) {
-        // TODO: Implement this constructor
+	if (deadWeight < 0) {
+	    throw new IllegalArgumentException("dead weight cannot be less than zero");
+	}
+	this.deadWeight = deadWeight;
     }
 
     /**
@@ -27,7 +30,10 @@ public class TrainCar {
      * @see TrainCarTest#testDeadWeight()
      */
     public void setDeadWeight(int deadWeight) {
-        // TODO: Implement this method
+	if (deadWeight < 0) {
+	    throw new IllegalArgumentException("dead weight cannot be less than zero");
+	}
+	this.deadWeight = deadWeight;
     }
 
     /**
@@ -37,8 +43,7 @@ public class TrainCar {
      * @see TrainCarTest#testDeadWeight()
      */
     public int getDeadWeight() {
-        // TODO: Implement this method
-        return 0;
+        return deadWeight;
     }
 
     /**
@@ -49,8 +54,7 @@ public class TrainCar {
      * @see TrainCarTest#testDeadWeight()
      */
     public int getTotalWeight() {
-        // TODO: Implement this method
-        return 0;
+        return deadWeight;
     }
 
     /**
@@ -61,8 +65,7 @@ public class TrainCar {
      */
     @Override
     public String toString() {
-        // TODO: Implement this method
-        return null;
+        return "TrainCar";
     }
 
     public static void main(String[] args) {