Generics and Collections

Author: turingfly

Java-8/src/genericsAndCollections/UsingComparable.java

@@ -11,11 +11,9 @@
  *
  */
 public class UsingComparable implements Comparable<UsingComparable> {
-
 	private String name;
 
 	public UsingComparable(String name) {
-		// TODO Auto-generated constructor stub
 		this.name = name;
 	}
 
@@ -25,7 +23,6 @@ public String toString() {
 
 	@Override
 	public int compareTo(UsingComparable o) {
-		// TODO Auto-generated method stub
 		return name.compareTo(o.name); // call String's compareTo
 	}
 

Java-8/src/genericsAndCollections/UsingComparable1.java

@@ -12,7 +12,7 @@ public class UsingComparable1 implements Comparable<UsingComparable1> {
 	private int id;
 
 	public int compareTo(UsingComparable1 a) {
-		return id - a.id;
+		return this.id - a.id;
 	}
 
 	public static void main(String[] args) {

Java-8/src/genericsAndCollections/UsingComparator.java

@@ -35,9 +35,9 @@ public String toString() {
 	public int compareTo(UsingComparator d) {
 		return name.compareTo(d.name);
 	}
-
 	public static void main(String[] args) {
 		Comparator<UsingComparator> byWeight = new Comparator<UsingComparator>() {
+			@Override
 			public int compare(UsingComparator d1, UsingComparator d2) {
 				return d1.getWeight() - d2.getWeight();
 			}

Java-8/src/genericsAndCollections/UsingMap.java

@@ -16,7 +16,7 @@
  * V put(K key, V value) 			Adds or replaces key/value pair. Returns previous value or null .
  * V remove(Object key) 			Removes and returns value mapped to key. Returns null if none. 
  * boolean containsKey(Object key) 	Returns whether key is in map.
- * boolean containsValue(Object) 	Returns value is in map.
+ * boolean containsValue(Object) 	Returns whether value is in map.
  * Set<K> keySet() 					Returns set of all keys.
  * Collection<V> values() 			Returns Collection of all values.
  */