More Sonar complaints fixes

javaluator-demo/src/main/java/com/fathzer/soft/javaluator/demo/ConstantTableModel.java

@@ -16,11 +16,8 @@ public class ConstantTableModel extends AbstractTableModel {
 
 	public ConstantTableModel(Collection<Constant> collection) {
 		this.constants = new ArrayList<>(collection);
-		Collections.sort(this.constants, new Comparator<Constant>() {
-			public int compare(Constant c1, Constant c2) {
-				return c1.getName().compareTo(c2.getName());
-			}
-		});
+		final Comparator<Constant> cmp = (c1, c2) -> c1.getName().compareTo(c2.getName());
+		Collections.sort(this.constants, cmp);
 	}
 
 	public int getColumnCount() {

javaluator-examples/src/test/java/com/fathzer/soft/javaluator/examples/junit/ExamplesTest.java

@@ -34,7 +34,7 @@ public void testExtended() {
 		ExtendedDoubleEvaluator evaluator = new ExtendedDoubleEvaluator();
 		// Test that all this stuff is ok
 		String expression = "sqrt(abs(-2))^2";
-		assertEquals(2, evaluator.evaluate(expression), 0.00001);;
+		assertEquals(2, evaluator.evaluate(expression), 0.00001);
 	}
 
 	@Test

javaluator/src/main/java/com/fathzer/soft/javaluator/DoubleEvaluator.java

@@ -219,7 +219,7 @@ protected Iterator<String> tokenize(String expression) {
 		if (supportsScientificNotation) {
 			// There's a trap with scientific number notation (1E+50 for example):
 			// + is considered as an operator. We'll make a basic work around...
-			final List<String> tokens = new ArrayList<String>();
+			final List<String> tokens = new ArrayList<>();
 			final Iterator<String> rawTokens = super.tokenize(expression);
 			while (rawTokens.hasNext()) {
 				tokens.add(rawTokens.next());

javaluator/src/main/java/com/fathzer/soft/javaluator/Parameters.java

@@ -25,12 +25,12 @@ public class Parameters {
 	 * <br>Function argument separator is set to ','.
 	 */
 	public Parameters() {
-		this.operators = new ArrayList<Operator>();
-		this.functions = new ArrayList<Function>();
-		this.constants = new ArrayList<Constant>();
-		this.translations = new HashMap<String, String>();
-		this.expressionBrackets = new ArrayList<BracketPair>();
-		this.functionBrackets = new ArrayList<BracketPair>();
+		this.operators = new ArrayList<>();
+		this.functions = new ArrayList<>();
+		this.constants = new ArrayList<>();
+		this.translations = new HashMap<>();
+		this.expressionBrackets = new ArrayList<>();
+		this.functionBrackets = new ArrayList<>();
 		setFunctionArgumentSeparator(',');
 	}
 

javaluator/src/test/java/com/fathzer/soft/javaluator/junit/BracketsTest.java

@@ -26,8 +26,7 @@ private DoubleEvaluator buildEvaluator() {
 		params.addExpressionBracket(BracketPair.PARENTHESES);
 		params.addExpressionBracket(BracketPair.BRACKETS);
 		params.addFunctionBracket(BracketPair.ANGLES);
-		DoubleEvaluator eval = new DoubleEvaluator(params);
-		return eval;
+		return new DoubleEvaluator(params);
 	}
 
 	@Test (expected=IllegalArgumentException.class)