java introduce constant: allow to replace multiple occurrences for field-anchor without initializer (IDEA-250412)

fix regression introduced by enabling extract variable from field initializer

GitOrigin-RevId: c6dd97ec10ecec32f48a337482afb6900464f668

java/java-impl/src/com/intellij/refactoring/util/occurrences/BaseOccurrenceManager.java

@@ -81,7 +81,7 @@ public abstract class BaseOccurrenceManager implements OccurrenceManager {
   @Override
   public PsiElement getAnchorStatementForAllInScope(PsiElement scope) {
     PsiElement anchor = RefactoringUtil.getAnchorElementForMultipleExpressions(myOccurrences, scope);
-    return anchor instanceof PsiField && !(anchor instanceof PsiEnumConstant) ? ((PsiField)anchor).getInitializer() : anchor;
+    return anchor instanceof PsiField && ((PsiField)anchor).hasInitializer() && !(anchor instanceof PsiEnumConstant) ? ((PsiField)anchor).getInitializer() : anchor;
   }
 
   private static boolean needToDeclareFinal(PsiExpression[] occurrences) {

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

@@ -0,0 +1,5 @@
+class Test {
+  @SuppressWarnings("unused")
+  String myField;
+  String myField1 = "unu<caret>sed";
+}

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

@@ -0,0 +1,6 @@
+class Test {
+    public static final String xxx = "unused";
+    @SuppressWarnings(xxx)
+  String myField;
+  String myField1 = xxx;
+}

java/java-tests/testSrc/com/intellij/java/refactoring/IntroduceConstantTest.java

@@ -180,6 +180,10 @@ public class IntroduceConstantTest extends LightJavaCodeInsightTestCase {
     doTestExpr();
   }
 
+  public void testConstantFromAnnotationOnFieldWithoutInitializer() {
+    doTestExpr();
+  }
+
   public void testEscalateVisibility() {
     configureByFile(BASE_PATH + getTestName(false) + ".java");
     final PsiClass[] classes = ((PsiJavaFile)getFile()).getClasses();