@@ -423,6 +423,10 @@ public boolean hasValue(float value) {
   }
 
 
+  private String exceptionText(int count, int index, String method){
+    return "The list size is "+count+". Trying to "+method+" the element at "+index+" which does not exist.";
+  }
+
   /**
    * @webref floatlist:method
    * @brief Add to a value
@@ -431,7 +435,7 @@ public void add(int index, float amount) {
     if (index < count) {
       data[index] += amount;
     } else {
-      throw new IndexOutOfBoundsException();
+      throw new ArrayIndexOutOfBoundsException(exceptionText(count, index, "add"));
     }
   }
 
@@ -444,7 +448,7 @@ public void sub(int index, float amount) {
     if (index < count) {
       data[index] -= amount;
     } else {
-      throw new IndexOutOfBoundsException();
+      throw new ArrayIndexOutOfBoundsException(exceptionText(count, index, "sub"));
     }
   }
 
@@ -457,7 +461,7 @@ public void mult(int index, float amount) {
     if (index < count) {
       data[index] *= amount;
     } else {
-      throw new IndexOutOfBoundsException();
+      throw new ArrayIndexOutOfBoundsException(exceptionText(count, index, "mult"));
     }
   }
 
@@ -470,7 +474,7 @@ public void div(int index, float amount) {
     if (index < count) {
       data[index] /= amount;
     } else {
-      throw new IndexOutOfBoundsException();
+      throw new ArrayIndexOutOfBoundsException(exceptionText(count, index, "div"));
     }
   }
 
 
@@ -407,52 +407,56 @@ public void increment(int index) {
     data[index]++;
   }
 
+  private String exceptionText(int count, int index, String method){
+    return "The list size is "+count+". Trying to "+method+" the element at "+index+" which does not exist.";
+  }
+
   /**
    * @webref intlist:method
    * @brief Add to a value
    */
   public void add(int index, int amount) {
-    if( index  < count) {
-	  data[index] += amount;
+    if (index < count) {
+      data[index] += amount;
     } else {
-	  throw new IndexOutOfBoundsException();
-	}
+      throw new IndexOutOfBoundsException(exceptionText(count, index, "add"));
+    }
   }
 
   /**
    * @webref intlist:method
    * @brief Subtract from a value
    */
   public void sub(int index, int amount) {
-    if( index  < count) {
-	  data[index] -= amount;
+    if (index < count) {
+      data[index] -= amount;
     } else {
-	  throw new IndexOutOfBoundsException();
-	}
+      throw new IndexOutOfBoundsException(exceptionText(count, index, "sub"));
+    }
   }
 
   /**
    * @webref intlist:method
    * @brief Multiply a value
    */
   public void mult(int index, int amount) {
-    if( index  < count) {
-	  data[index] *= amount;
+    if (index < count) {
+      data[index] *= amount;
     } else {
-	  throw new IndexOutOfBoundsException();
-	}
+      throw new IndexOutOfBoundsException(exceptionText(count, index, "mult"));
+    }
   }
 
   /**
    * @webref intlist:method
    * @brief Divide a value
    */
   public void div(int index, int amount) {
-    if( index  < count) {
-	  data[index] /= amount;
+    if (index < count) {
+      data[index] /= amount;
     } else {
-	  throw new IndexOutOfBoundsException();
-	}
+      throw new IndexOutOfBoundsException(exceptionText(count, index, "div"));
+    }
   }
Original file line number	Diff line number	Diff line change
@@ -423,6 +423,10 @@ public boolean hasValue(float value) {
423	423	}
424	424
425	425
	426	+ private String exceptionText(int count, int index, String method){
	427	+ return "The list size is "+count+". Trying to "+method+" the element at "+index+" which does not exist.";
	428	+ }
	429	+
426	430	/**
427	431	* @webref floatlist:method
428	432	* @brief Add to a value
@@ -431,7 +435,7 @@ public void add(int index, float amount) {
431	435	if (index < count) {
432	436	data[index] += amount;
433	437	} else {
434		- throw new IndexOutOfBoundsException();
	438	+ throw new ArrayIndexOutOfBoundsException(exceptionText(count, index, "add"));
435	439	}
436	440	}
437	441
@@ -444,7 +448,7 @@ public void sub(int index, float amount) {
444	448	if (index < count) {
445	449	data[index] -= amount;
446	450	} else {
447		- throw new IndexOutOfBoundsException();
	451	+ throw new ArrayIndexOutOfBoundsException(exceptionText(count, index, "sub"));
448	452	}
449	453	}
450	454
@@ -457,7 +461,7 @@ public void mult(int index, float amount) {
457	461	if (index < count) {
458	462	data[index] *= amount;
459	463	} else {
460		- throw new IndexOutOfBoundsException();
	464	+ throw new ArrayIndexOutOfBoundsException(exceptionText(count, index, "mult"));
461	465	}
462	466	}
463	467
@@ -470,7 +474,7 @@ public void div(int index, float amount) {
470	474	if (index < count) {
471	475	data[index] /= amount;
472	476	} else {
473		- throw new IndexOutOfBoundsException();
	477	+ throw new ArrayIndexOutOfBoundsException(exceptionText(count, index, "div"));
474	478	}
475	479	}
476	480