v4: Specify @Override

[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9369]

runtime/Java/src/org/antlr/v4/runtime/tree/ElementList.java

@@ -46,11 +46,13 @@ public class ElementList<E> extends ArrayList<E> {
 		/** If just 1 element, we still track cursor; next() will dup if
 		 *  cursor beyond 1 element.
 		 */
+		@Override
 		public boolean hasNext() {
 			int n = size();
 			return (n==1 && cursor<1) || (n>1 && cursor<n);
 		}
 
+		@Override
 		public E next() {
 			int n = size();
 			if ( n == 0 ) throw new RewriteEmptyStreamException("n/a");
@@ -73,6 +75,7 @@ public class ElementList<E> extends ArrayList<E> {
 			return e;
 		}
 
+		@Override
 		public void remove() { throw new UnsupportedOperationException(); }
 	}
 

runtime/Java/src/org/antlr/v4/runtime/tree/ParseTree.java

@@ -57,19 +57,25 @@ public interface ParseTree extends SyntaxTree {
 		public int s;
 		public TokenNodeImpl(Token token) {	this.token = token;	}
 
+		@Override
 		public ParseTree getChild(int i) {return null;}
 
+		@Override
 		public Token getToken() {return token;}
 
+		@Override
 		public ParseTree getParent() { return parent; }
 
+		@Override
 		public Token getPayload() { return token; }
 
+		@Override
 		public Interval getSourceInterval() {
 			if ( token==null ) return Interval.INVALID;
 			return new Interval(token.getTokenIndex(), token.getTokenIndex());
 		}
 
+		@Override
 		public int getChildCount() { return 0; }
 
 		@Override
@@ -78,6 +84,7 @@ public interface ParseTree extends SyntaxTree {
 			return token.getText();
 		}
 
+		@Override
 		public String toStringTree() {
 			return toString();
 		}
@@ -98,6 +105,8 @@ public interface ParseTree extends SyntaxTree {
 	}
 
 	// the following methods narrow the return type; they are not additional methods
+	@Override
 	ParseTree getParent();
+	@Override
 	ParseTree getChild(int i);
 }