fix a bunch of warnings

src/main/java/com/gargoylesoftware/css/dom/CSSCharsetRuleImpl.java

@@ -49,13 +49,11 @@ public CSSCharsetRuleImpl(
     }
 
     /**
-     * Sets the css text.
-     * @param cssText the new css text
-     * @throws DOMException in case of error
+     * {@inheritDoc}
      */
+    @Override
     public void setCssText(final String cssText) throws DOMException {
-        try {
-            final InputSource is = new InputSource(new StringReader(cssText));
+        try (InputSource is = new InputSource(new StringReader(cssText))) {
             final CSSOMParser parser = new CSSOMParser();
             final AbstractCSSRuleImpl r = parser.parseRule(is);
 
@@ -116,8 +114,9 @@ public String toString() {
     }
 
     /**
-     * @return the current css text
+     * {@inheritDoc}
      */
+    @Override
     public String getCssText() {
         final StringBuilder sb = new StringBuilder();
 

src/main/java/com/gargoylesoftware/css/dom/CSSFontFaceRuleImpl.java

@@ -45,6 +45,7 @@ public CSSFontFaceRuleImpl(final CSSStyleSheetImpl parentStyleSheet, final Abstr
     /**
      * {@inheritDoc}
      */
+    @Override
     public String getCssText() {
         final StringBuilder sb = new StringBuilder();
         sb.append("@font-face {");
@@ -58,13 +59,11 @@ public String getCssText() {
     }
 
     /**
-     * Sets the css text.
-     * @param cssText the new css text
-     * @throws DOMException in case of error
+     * {@inheritDoc}
      */
+    @Override
     public void setCssText(final String cssText) throws DOMException {
-        try {
-            final InputSource is = new InputSource(new StringReader(cssText));
+        try (InputSource is = new InputSource(new StringReader(cssText))) {
             final CSSOMParser parser = new CSSOMParser();
             final AbstractCSSRuleImpl r = parser.parseRule(is);
 

src/main/java/com/gargoylesoftware/css/dom/CSSImportRuleImpl.java

@@ -55,6 +55,7 @@ public CSSImportRuleImpl(
     /**
      * {@inheritDoc}
      */
+    @Override
     public String getCssText() {
         final StringBuilder sb = new StringBuilder();
         sb.append("@import");
@@ -73,13 +74,11 @@ public String getCssText() {
     }
 
     /**
-     * Sets the css text.
-     * @param cssText the new css text
-     * @throws DOMException in case of error
+     * {@inheritDoc}
      */
+    @Override
     public void setCssText(final String cssText) throws DOMException {
-        try {
-            final InputSource is = new InputSource(new StringReader(cssText));
+        try (InputSource is = new InputSource(new StringReader(cssText))) {
             final CSSOMParser parser = new CSSOMParser();
             final AbstractCSSRuleImpl r = parser.parseRule(is);
 

src/main/java/com/gargoylesoftware/css/dom/CSSMediaRuleImpl.java

@@ -54,6 +54,7 @@ public CSSMediaRuleImpl(
     /**
      * {@inheritDoc}
      */
+    @Override
     public String getCssText() {
         final StringBuilder sb = new StringBuilder("@media ");
 
@@ -68,13 +69,11 @@ public String getCssText() {
     }
 
     /**
-     * Sets the css text.
-     * @param cssText the new css text
-     * @throws DOMException in case of error
+     * {@inheritDoc}
      */
+    @Override
     public void setCssText(final String cssText) throws DOMException {
-        try {
-            final InputSource is = new InputSource(new StringReader(cssText));
+        try (InputSource is = new InputSource(new StringReader(cssText))) {
             final CSSOMParser parser = new CSSOMParser();
             final AbstractCSSRuleImpl r = parser.parseRule(is);
 
@@ -129,8 +128,7 @@ public CSSRuleListImpl getCssRules() {
     public void insertRule(final String rule, final int index) throws DOMException {
         final CSSStyleSheetImpl parentStyleSheet = getParentStyleSheet();
 
-        try {
-            final InputSource is = new InputSource(new StringReader(rule));
+        try (InputSource is = new InputSource(new StringReader(rule))) {
             final CSSOMParser parser = new CSSOMParser();
             parser.setParentStyleSheet(parentStyleSheet);
             parser.setErrorHandler(ThrowCssExceptionErrorHandler.INSTANCE);

src/main/java/com/gargoylesoftware/css/dom/CSSPageRuleImpl.java

@@ -52,6 +52,7 @@ public CSSPageRuleImpl(
     /**
      * {@inheritDoc}
      */
+    @Override
     public String getCssText() {
         final StringBuilder sb = new StringBuilder();
 
@@ -72,13 +73,11 @@ public String getCssText() {
     }
 
     /**
-     * Sets the css text.
-     * @param cssText the new css text
-     * @throws DOMException in case of error
+     * {@inheritDoc}
      */
+    @Override
     public void setCssText(final String cssText) throws DOMException {
-        try {
-            final InputSource is = new InputSource(new StringReader(cssText));
+        try (InputSource is = new InputSource(new StringReader(cssText))) {
             final CSSOMParser parser = new CSSOMParser();
             final AbstractCSSRuleImpl r = parser.parseRule(is);
 

src/main/java/com/gargoylesoftware/css/dom/CSSRuleListImpl.java

@@ -27,7 +27,7 @@
  */
 public class CSSRuleListImpl implements Serializable {
 
-    private List<AbstractCSSRuleImpl> rules_ = new ArrayList<AbstractCSSRuleImpl>();
+    private List<AbstractCSSRuleImpl> rules_ = new ArrayList<>();
 
     /**
      * @return the rules

src/main/java/com/gargoylesoftware/css/dom/CSSStyleDeclarationImpl.java

@@ -35,7 +35,7 @@ public class CSSStyleDeclarationImpl implements Serializable {
     private static final String PRIORITY_IMPORTANT = "important";
 
     private AbstractCSSRuleImpl parentRule_;
-    private List<Property> properties_ = new ArrayList<Property>();
+    private List<Property> properties_ = new ArrayList<>();
 
     /**
      * Ctor.
@@ -77,8 +77,7 @@ public String getCssText() {
      * @throws DOMException in case of error
      */
     public void setCssText(final String cssText) throws DOMException {
-        try {
-            final InputSource is = new InputSource(new StringReader(cssText));
+        try (InputSource is = new InputSource(new StringReader(cssText))) {
             final CSSOMParser parser = new CSSOMParser();
             properties_.clear();
             parser.parseStyleDeclaration(this, is);

src/main/java/com/gargoylesoftware/css/dom/CSSStyleRuleImpl.java

@@ -65,6 +65,7 @@ public void setSelectors(final SelectorList selectors) {
     /**
      * {@inheritDoc}
      */
+    @Override
     public String getCssText() {
         final CSSStyleDeclarationImpl style = getStyle();
         if (null == style) {
@@ -82,13 +83,11 @@ public String getCssText() {
     }
 
     /**
-     * Sets the css text.
-     * @param cssText the new css text
-     * @throws DOMException in case of error
+     * {@inheritDoc}
      */
+    @Override
     public void setCssText(final String cssText) throws DOMException {
-        try {
-            final InputSource is = new InputSource(new StringReader(cssText));
+        try (InputSource is = new InputSource(new StringReader(cssText))) {
             final CSSOMParser parser = new CSSOMParser();
             final AbstractCSSRuleImpl r = parser.parseRule(is);
 
@@ -130,8 +129,7 @@ public String getSelectorText() {
      * @throws DOMException in clase of error
      */
     public void setSelectorText(final String selectorText) throws DOMException {
-        try {
-            final InputSource is = new InputSource(new StringReader(selectorText));
+        try (InputSource is = new InputSource(new StringReader(selectorText))) {
             final CSSOMParser parser = new CSSOMParser();
             selectors_ = parser.parseSelectors(is);
         }

src/main/java/com/gargoylesoftware/css/dom/CSSStyleSheetImpl.java

@@ -131,8 +131,7 @@ public CSSRuleListImpl getCssRules() {
      * @throws DOMException in case of error
      */
     public void insertRule(final String rule, final int index) throws DOMException {
-        try {
-            final InputSource is = new InputSource(new StringReader(rule));
+        try (InputSource is = new InputSource(new StringReader(rule))) {
             final CSSOMParser parser = new CSSOMParser();
             parser.setParentStyleSheet(this);
             parser.setErrorHandler(ThrowCssExceptionErrorHandler.INSTANCE);
@@ -260,8 +259,7 @@ public void setTitle(final String title) {
      * @param mediaText the new media text
      */
     public void setMediaText(final String mediaText) {
-        final InputSource source = new InputSource(new StringReader(mediaText));
-        try {
+        try (InputSource source = new InputSource(new StringReader(mediaText))) {
             final CSSOMParser parser = new CSSOMParser();
             final MediaQueryList sml = parser.parseMedia(source);
             media_ = new MediaListImpl(sml);
@@ -402,7 +400,7 @@ private static final class SelectorIndex {
             void add(final String key, final SelectorEntry selector) {
                 List<SelectorEntry> entry = keyToSelectors_.get(key);
                 if (entry == null) {
-                    entry = new ArrayList<SelectorEntry>();
+                    entry = new ArrayList<>();
                     keyToSelectors_.put(key, entry);
                 }
                 entry.add(selector);
@@ -522,7 +520,7 @@ static final class SelectorEntriesIterator implements Iterator<SelectorEntry> {
                 final String elementName,
                 final String[] classes) {
 
-            iterators_ = new LinkedList<Iterator<SelectorEntry>>();
+            iterators_ = new LinkedList<>();
 
             List<SelectorEntry> selectors = index.elementSelectors_.get(null);
             if (!selectors.isEmpty()) {

src/main/java/com/gargoylesoftware/css/dom/CSSStyleSheetListImpl.java

@@ -33,7 +33,7 @@ public class CSSStyleSheetListImpl {
      */
     public List<CSSStyleSheetImpl> getCSSStyleSheets() {
         if (cssStyleSheets_ == null) {
-            cssStyleSheets_ = new ArrayList<CSSStyleSheetImpl>();
+            cssStyleSheets_ = new ArrayList<>();
         }
         return cssStyleSheets_;
     }

src/main/java/com/gargoylesoftware/css/dom/CSSUnknownRuleImpl.java

@@ -50,6 +50,7 @@ public CSSUnknownRuleImpl(
     /**
      * {@inheritDoc}
      */
+    @Override
     public String getCssText() {
         if (null == text_) {
             return "";
@@ -58,13 +59,11 @@ public String getCssText() {
     }
 
     /**
-     * Sets the css text.
-     * @param cssText the new css text
-     * @throws DOMException in case of error
+     * {@inheritDoc}
      */
+    @Override
     public void setCssText(final String cssText) throws DOMException {
-        try {
-            final InputSource is = new InputSource(new StringReader(cssText));
+        try (InputSource is = new InputSource(new StringReader(cssText))) {
             final CSSOMParser parser = new CSSOMParser();
             final AbstractCSSRuleImpl r = parser.parseRule(is);
 

src/main/java/com/gargoylesoftware/css/dom/CSSValueImpl.java

@@ -194,8 +194,8 @@ else if (value.getLexicalUnitType() == LexicalUnitType.COUNTERS_FUNCTION) {
         }
     }
 
-    private List<CSSValueImpl> getValues(final LexicalUnit value) {
-        final List<CSSValueImpl> values = new ArrayList<CSSValueImpl>();
+    private static List<CSSValueImpl> getValues(final LexicalUnit value) {
+        final List<CSSValueImpl> values = new ArrayList<>();
         LexicalUnit lu = value;
         while (lu != null) {
             values.add(new CSSValueImpl(lu, true));
@@ -255,8 +255,7 @@ public String getCssText() {
      * @throws DOMException in case of error
      */
     public void setCssText(final String cssText) throws DOMException {
-        try {
-            final InputSource is = new InputSource(new StringReader(cssText));
+        try (InputSource is = new InputSource(new StringReader(cssText))) {
             final CSSOMParser parser = new CSSOMParser();
             final CSSValueImpl v2 = parser.parsePropertyValue(is);
             value_ = v2.value_;

src/main/java/com/gargoylesoftware/css/dom/MediaListImpl.java

@@ -45,7 +45,7 @@ public class MediaListImpl extends AbstractLocatable implements Serializable {
      * @param mediaList the media list
      */
     public MediaListImpl(final MediaQueryList mediaList) {
-        mediaQueries_ = new ArrayList<MediaQuery>(10);
+        mediaQueries_ = new ArrayList<>(10);
 
         setMediaList(mediaList);
         if (mediaList != null) {
@@ -77,8 +77,7 @@ public String getMediaText() {
      * @throws DOMException in case of error
      */
     public void setMediaText(final String mediaText) throws DOMException {
-        final InputSource source = new InputSource(new StringReader(mediaText));
-        try {
+        try (InputSource source = new InputSource(new StringReader(mediaText))) {
             final CSSOMParser parser = new CSSOMParser();
             parser.setErrorHandler(ThrowCssExceptionErrorHandler.INSTANCE);
             final MediaQueryList sml = parser.parseMedia(source);

src/main/java/com/gargoylesoftware/css/parser/AbstractCSSParser.java

@@ -442,7 +442,7 @@ public MediaQueryList parseMedia(final InputSource source) throws IOException {
         return ml;
     }
 
-    private CharStream getCharStream(final InputSource source) throws IOException {
+    private static CharStream getCharStream(final InputSource source) throws IOException {
         if (source.getReader() != null) {
             return new CssCharStream(source.getReader(), 1, 1);
         }

src/main/java/com/gargoylesoftware/css/parser/CSSOMParser.java

@@ -108,7 +108,7 @@ public CSSStyleDeclarationImpl parseStyleDeclaration(final InputSource source) t
      * @throws IOException if the underlying SAC parser throws an IOException
      */
     public void parseStyleDeclaration(final CSSStyleDeclarationImpl sd, final InputSource source) throws IOException {
-        final Stack<Object> nodeStack = new Stack<Object>();
+        final Stack<Object> nodeStack = new Stack<>();
         nodeStack.push(sd);
         final CSSOMHandler handler = new CSSOMHandler(nodeStack);
         parser_.setDocumentHandler(handler);
@@ -207,7 +207,7 @@ private void setHref(final String href) {
         }
 
         CSSOMHandler() {
-            nodeStack_ = new Stack<Object>();
+            nodeStack_ = new Stack<>();
         }
 
         Object getRoot() {

src/main/java/com/gargoylesoftware/css/parser/media/MediaQuery.java

@@ -47,7 +47,7 @@ public MediaQuery(final String media) {
      */
     public MediaQuery(final String media, final boolean isOnly, final boolean isNot) {
         media_ = media;
-        properties_ = new ArrayList<Property>(10);
+        properties_ = new ArrayList<>(10);
         isOnly_ = isOnly;
         isNot_ = isNot;
     }

src/main/java/com/gargoylesoftware/css/parser/media/MediaQueryList.java

@@ -32,7 +32,7 @@ public class MediaQueryList extends AbstractLocatable {
      * Ctor.
      */
     public MediaQueryList() {
-        mediaQueries_ = new ArrayList<MediaQuery>();
+        mediaQueries_ = new ArrayList<>();
     }
 
     /**

src/main/java/com/gargoylesoftware/css/parser/selector/ChildSelector.java

@@ -14,12 +14,10 @@
  */
 package com.gargoylesoftware.css.parser.selector;
 
-import java.io.Serializable;
-
 /**
  * @author Ronald Brill
  */
-public class ChildSelector extends AbstractSelector implements Serializable {
+public class ChildSelector extends AbstractSelector {
 
     private Selector ancestorSelector_;
     private SimpleSelector simpleSelector_;

src/main/java/com/gargoylesoftware/css/parser/selector/DescendantSelector.java

@@ -14,12 +14,10 @@
  */
 package com.gargoylesoftware.css.parser.selector;
 
-import java.io.Serializable;
-
 /**
  * @author Ronald Brill
  */
-public class DescendantSelector extends AbstractSelector implements Serializable {
+public class DescendantSelector extends AbstractSelector {
 
     private final Selector ancestorSelector_;
     private final SimpleSelector simpleSelector_;

src/main/java/com/gargoylesoftware/css/parser/selector/DirectAdjacentSelector.java

@@ -14,12 +14,10 @@
  */
 package com.gargoylesoftware.css.parser.selector;
 
-import java.io.Serializable;
-
 /**
  * @author Ronald Brill
  */
-public class DirectAdjacentSelector extends AbstractSelector implements Serializable {
+public class DirectAdjacentSelector extends AbstractSelector {
 
     private final Selector selector_;  // child
     private final SimpleSelector simpleSelector_;