regressions: ExplicitInitialization: added

Regression added in preparation for checkstyle adding an option in
7.8.x to allow primatives to be initialised to their default values.

regressions/src/main/java/net/kemitix/checkstyle/regressions/ExplicitInitialization.java

@@ -0,0 +1,60 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Paul Campbell
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies
+ * or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
+ * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package net.kemitix.checkstyle.regressions;
+
+/**
+ * Regression demo for {@code ExplicitInitializationCheck}.
+ *
+ * @author Paul Campbell (pcampbell@kemitix.net).
+ */
+@SuppressWarnings("hideutilityclassconstructor")
+class ExplicitInitialization {
+
+    /**
+     * This will become valid in next release.
+     */
+    @SuppressWarnings("explicitinitialization")
+    private boolean validBoolean = false;
+
+    /**
+     * This will become valid in next release.
+     */
+    @SuppressWarnings("explicitinitialization")
+    private int validInt = 0;
+
+    private String validString = "";
+
+    private Object validObject = new Object();
+
+    @SuppressWarnings("explicitinitialization")
+    private Boolean invalidBoolean = null;
+
+    @SuppressWarnings("explicitinitialization")
+    private Integer invalidInteger = null;
+
+    @SuppressWarnings("explicitinitialization")
+    private String invalidString = null;
+
+    @SuppressWarnings("explicitinitialization")
+    private Object invalidObject = null;
+
+}