Fix a bunch of compile-time warnings, minor doc tweaks

config/src/main/java/com/typesafe/config/impl/ConfigBeanImpl.java

@@ -12,7 +12,6 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.concurrent.TimeUnit;
 import java.time.Duration;
 
 import com.typesafe.config.Config;
@@ -79,7 +78,7 @@ public class ConfigBeanImpl {
             List<ConfigException.ValidationProblem> problems = new ArrayList<ConfigException.ValidationProblem>();
             for (PropertyDescriptor beanProp : beanProps) {
                 Method setter = beanProp.getWriteMethod();
-                Class parameterClass = setter.getParameterTypes()[0];
+                Class<?> parameterClass = setter.getParameterTypes()[0];
 
                 ConfigValueType expectedType = getValueTypeOrNull(parameterClass);
                 if (expectedType != null) {
@@ -127,7 +126,8 @@ public class ConfigBeanImpl {
     // setting. So, instead, we only support a limited number of
     // types plus you can always use Object, ConfigValue, Config,
     // ConfigObject, etc.  as an escape hatch.
-    private static Object getValue(Class beanClass, Type parameterType, Class<?> parameterClass, Config config, String configPropName) {
+    private static Object getValue(Class<?> beanClass, Type parameterType, Class<?> parameterClass, Config config,
+            String configPropName) {
         if (parameterClass == Boolean.class || parameterClass == boolean.class) {
             return config.getBoolean(configPropName);
         } else if (parameterClass == Integer.class || parameterClass == int.class) {

config/src/main/java/com/typesafe/config/impl/ConfigDocumentParser.java

@@ -336,7 +336,6 @@ final class ConfigDocumentParser {
                 t = nextTokenCollectingWhitespace(children);
 
                 // quoted string
-                String name;
                 if (!Tokens.isValueWithType(t, ConfigValueType.STRING)) {
                     throw parseError("expecting a quoted string inside file(), classpath(), or url(), rather than: "
                             + t);
@@ -399,7 +398,6 @@ final class ConfigDocumentParser {
                     Token afterKey = nextTokenCollectingWhitespace(keyValueNodes);
                     boolean insideEquals = false;
 
-                    Token valueToken;
                     AbstractConfigNodeValue nextValue;
                     if (flavor == ConfigSyntax.CONF && afterKey == Tokens.OPEN_CURLY) {
                         // can omit the ':' or '=' before an object value

config/src/main/java/com/typesafe/config/impl/ConfigNodeComplexValue.java

@@ -9,7 +9,7 @@ abstract class ConfigNodeComplexValue extends AbstractConfigNodeValue {
     final protected ArrayList<AbstractConfigNode> children;
 
     ConfigNodeComplexValue(Collection<AbstractConfigNode> children) {
-        this.children = new ArrayList(children);
+        this.children = new ArrayList<AbstractConfigNode>(children);
     }
 
     final public Collection<AbstractConfigNode> children() {
@@ -18,7 +18,7 @@ abstract class ConfigNodeComplexValue extends AbstractConfigNodeValue {
 
     @Override
     protected Collection<Token> tokens() {
-        ArrayList<Token> tokens = new ArrayList();
+        ArrayList<Token> tokens = new ArrayList<Token>();
         for (AbstractConfigNode child : children) {
             tokens.addAll(child.tokens());
         }

config/src/main/java/com/typesafe/config/impl/ConfigNodeInclude.java

@@ -18,7 +18,7 @@ final class ConfigNodeInclude extends AbstractConfigNode {
 
     @Override
     protected Collection<Token> tokens() {
-        ArrayList<Token> tokens = new ArrayList();
+        ArrayList<Token> tokens = new ArrayList<Token>();
         for (AbstractConfigNode child : children) {
             tokens.addAll(child.tokens());
         }

config/src/main/java/com/typesafe/config/impl/ConfigParser.java

@@ -238,9 +238,7 @@ final class ConfigParser {
                 } else if (node instanceof ConfigNodeField) {
                     lastWasNewline = false;
                     Path path = ((ConfigNodeField) node).path().value();
-                    AbstractConfigNodeValue nodeValue = ((ConfigNodeField) node).value();
                     comments.addAll(((ConfigNodeField) node).comments());
-                    boolean insideEquals = false;
 
                     // path must be on-stack while we parse the value
                     pathStack.push(path);
@@ -263,10 +261,6 @@ final class ConfigParser {
                     AbstractConfigNodeValue valueNode;
                     AbstractConfigValue newValue;
 
-                    if (((ConfigNodeField) node).separator() == Tokens.EQUALS) {
-                        insideEquals = true;
-                    }
-
                     valueNode = ((ConfigNodeField) node).value();
 
                     // comments from the key token go to the value token

config/src/main/java/com/typesafe/config/impl/PathBuilder.java

@@ -3,8 +3,6 @@
  */
 package com.typesafe.config.impl;
 
-import java.util.ArrayList;
-import java.util.Collection;
 import java.util.Stack;
 
 import com.typesafe.config.ConfigException;

config/src/main/java/com/typesafe/config/impl/SimpleConfig.java

@@ -161,11 +161,6 @@ final class SimpleConfig implements Config, MergeableValue, Serializable {
             return v;
     }
 
-    static private AbstractConfigValue find(AbstractConfigObject self, Path path,
-            ConfigValueType expected, Path originalPath) {
-        return throwIfNull(findOrNull(self, path, expected, originalPath), expected, originalPath);
-    }
-
     static private AbstractConfigValue findOrNull(AbstractConfigObject self, Path path,
             ConfigValueType expected, Path originalPath) {
         try {

config/src/main/java/com/typesafe/config/impl/SimpleConfigDocument.java

@@ -1,7 +1,6 @@
 package com.typesafe.config.impl;
 
 import com.typesafe.config.parser.ConfigDocument;
-import com.typesafe.config.ConfigException;
 import com.typesafe.config.ConfigParseOptions;
 import com.typesafe.config.ConfigValue;
 

config/src/main/java/com/typesafe/config/impl/Tokens.java

@@ -131,8 +131,6 @@ final class Tokens {
             this.value = s;
         }
 
-        String value() { return value; }
-
         @Override
         public String toString() { return "'" + value + "' (WHITESPACE)"; }
 

config/src/main/java/com/typesafe/config/parser/ConfigDocument.java

@@ -1,6 +1,5 @@
 package com.typesafe.config.parser;
 
-import com.typesafe.config.ConfigParseOptions;
 import com.typesafe.config.ConfigValue;
 
 /**

config/src/main/java/com/typesafe/config/parser/ConfigDocumentFactory.java

@@ -2,7 +2,6 @@ package com.typesafe.config.parser;
 
 import com.typesafe.config.ConfigParseOptions;
 
-import com.typesafe.config.impl.ConfigImpl;
 import com.typesafe.config.impl.Parseable;
 
 import java.io.File;

config/src/main/java/com/typesafe/config/parser/ConfigNode.java

@@ -7,6 +7,13 @@ package com.typesafe.config.parser;
  * A node in the syntax tree for a HOCON or JSON document.
  *
  * <p>
+ * Note: at present there is no way to obtain an instance of this interface, so
+ * please ignore it. A future release will make syntax tree nodes available in
+ * the public API. If you are interested in working on it, please see: <a
+ * href="https://github.com/typesafehub/config/issues/300"
+ * >https://github.com/typesafehub/config/issues/300</a>
+ *
+ * <p>
  * Because this object is immutable, it is safe to use from multiple threads and
  * there's no need for "defensive copies."
  *
@@ -19,7 +26,9 @@ package com.typesafe.config.parser;
  */
 public interface ConfigNode {
     /**
-     * The original text of the input which was used to form this particular node.
+     * The original text of the input which was used to form this particular
+     * node.
+     *
      * @return the original text used to form this node as a String
      */
     public String render();

config/src/test/scala/com/typesafe/config/impl/TestUtils.scala

@@ -248,7 +248,7 @@ abstract trait TestUtils {
                     "possibly caused by http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6446627",
                     nf)
             case e: Exception =>
-                System.err.println(e.getStackTraceString);
+                System.err.println(e.getStackTrace.toString);
                 throw new AssertionError("failed to make a copy via serialization", e)
         }