Java: allow to introduce a constant as a field of an inner, local or anonymous class (IDEA-341923)

for Introduce Constant refactoring. Also fixes IDEABKL-3269 when introducing a compile-time constant from an expression.

GitOrigin-RevId: 169e7ee8e14306a265948537b62746d9a26c0298

java/java-tests/testData/refactoring/introduceConstant/NonStaticContainerForCompileTimeConstant2.java

@@ -0,0 +1,7 @@
+class Foo {
+  class Bar {
+    void foo() {
+      String str = <caret>"42";
+    }
+  }
+}

java/java-tests/testData/refactoring/introduceConstant/NonStaticContainerForCompileTimeConstant2_after.java

@@ -0,0 +1,9 @@
+class Foo {
+  class Bar {
+      public static final String xxx = "42";
+
+      void foo() {
+      String str = xxx;
+    }
+  }
+}

java/java-tests/testData/refactoring/introduceConstant/NonStaticContainerForCompileTimeConstant_after.java

@@ -1,9 +1,11 @@
+import org.jetbrains.annotations.NonNls;
+
 class Foo {
   class Bar {
-      public static final String xxx = "42";
+      @NonNls
+      private static final String xxx = "42";
 
       void foo() {
-      String str = xxx;
-    }
+      }
   }
 }

java/java-tests/testData/refactoring/introduceConstant/StaticFieldInAnonymous.java

@@ -0,0 +1,10 @@
+class X {
+
+    void x() {
+        new Object() {
+            void x() {
+                System.out.println(<selection>new <caret>Object()</selection>);
+            }
+        };
+    }
+}

java/java-tests/testData/refactoring/introduceConstant/StaticFieldInAnonymousJava8.java

@@ -0,0 +1,10 @@
+class X {
+
+    void x() {
+        new Object() {
+            void x() {
+                System.out.println(<selection>new <caret>Object()</selection>);
+            }
+        };
+    }
+}

java/java-tests/testData/refactoring/introduceConstant/StaticFieldInAnonymousJava8_after.java

@@ -0,0 +1,12 @@
+class X {
+
+    public static final Object xxx = new Object();
+
+    void x() {
+        new Object() {
+            void x() {
+                System.out.println(xxx);
+            }
+        };
+    }
+}

java/java-tests/testData/refactoring/introduceConstant/StaticFieldInAnonymous_after.java

@@ -0,0 +1,12 @@
+class X {
+
+    void x() {
+        new Object() {
+            public static final Object xxx = new Object();
+
+            void x() {
+                System.out.println(xxx);
+            }
+        };
+    }
+}