Clean up a bunch of warnings.

[elifoster]

Primarily, unused import statements, unnecessary semicolons, use of deprecated fields and methods, and unnecessary modifiers. There are probably some others that I missed. I neglected to clean up a bunch of other warnings because, surprisingly, most of them actually improve readability, or are not worth fixing.

[elifoster]

Hm. Looks like IDEA messed up some { placement in the few cases where I used its automatic stuff. I'll fix those and squash.

[squeek502]

Looks pretty good. Here's an export of my IDEA code style settings if that might help you:

<code_scheme name="Squeek">
  <option name="OTHER_INDENT_OPTIONS">
    <value>
      <option name="INDENT_SIZE" value="4" />
      <option name="CONTINUATION_INDENT_SIZE" value="8" />
      <option name="TAB_SIZE" value="4" />
      <option name="USE_TAB_CHARACTER" value="true" />
      <option name="SMART_TABS" value="false" />
      <option name="LABEL_INDENT_SIZE" value="0" />
      <option name="LABEL_INDENT_ABSOLUTE" value="false" />
      <option name="USE_RELATIVE_INDENTS" value="false" />
    </value>
  </option>
  <option name="RIGHT_MARGIN" value="140" />
  <option name="JD_ALIGN_PARAM_COMMENTS" value="false" />
  <option name="JD_ALIGN_EXCEPTION_COMMENTS" value="false" />
  <option name="JD_P_AT_EMPTY_LINES" value="false" />
  <option name="JD_KEEP_INVALID_TAGS" value="false" />
  <option name="JD_KEEP_EMPTY_PARAMETER" value="false" />
  <option name="JD_KEEP_EMPTY_EXCEPTION" value="false" />
  <option name="JD_KEEP_EMPTY_RETURN" value="false" />
  <JavaCodeStyleSettings>
    <option name="CLASS_NAMES_IN_JAVADOC" value="3" />
  </JavaCodeStyleSettings>
  <XML>
    <option name="XML_LEGACY_SETTINGS_IMPORTED" value="true" />
  </XML>
  <codeStyleSettings language="Groovy">
    <indentOptions>
      <option name="USE_TAB_CHARACTER" value="true" />
    </indentOptions>
  </codeStyleSettings>
  <codeStyleSettings language="JAVA">
    <option name="KEEP_FIRST_COLUMN_COMMENT" value="false" />
    <option name="KEEP_BLANK_LINES_IN_DECLARATIONS" value="1" />
    <option name="KEEP_BLANK_LINES_IN_CODE" value="1" />
    <option name="KEEP_BLANK_LINES_BEFORE_RBRACE" value="1" />
    <option name="BLANK_LINES_BEFORE_IMPORTS" value="0" />
    <option name="BRACE_STYLE" value="2" />
    <option name="CLASS_BRACE_STYLE" value="2" />
    <option name="METHOD_BRACE_STYLE" value="2" />
    <option name="ELSE_ON_NEW_LINE" value="true" />
    <option name="WHILE_ON_NEW_LINE" value="true" />
    <option name="CATCH_ON_NEW_LINE" value="true" />
    <option name="FINALLY_ON_NEW_LINE" value="true" />
    <option name="ALIGN_MULTILINE_PARAMETERS_IN_CALLS" value="true" />
    <option name="ALIGN_MULTILINE_RESOURCES" value="false" />
    <option name="EXTENDS_KEYWORD_WRAP" value="1" />
    <option name="THROWS_KEYWORD_WRAP" value="1" />
    <option name="BINARY_OPERATION_SIGN_ON_NEXT_LINE" value="true" />
    <option name="KEEP_SIMPLE_METHODS_IN_ONE_LINE" value="true" />
    <option name="KEEP_SIMPLE_CLASSES_IN_ONE_LINE" value="true" />
    <indentOptions>
      <option name="CONTINUATION_INDENT_SIZE" value="4" />
      <option name="USE_TAB_CHARACTER" value="true" />
    </indentOptions>
  </codeStyleSettings>
</code_scheme>