extract field from auto closable (IDEA-125141)

java/java-tests/testData/refactoring/inplaceIntroduceField/localResource.java

@@ -0,0 +1,22 @@
+import java.io.BufferedReader;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+
+class JavaClass {
+
+  static String readFirstLineFromFile() throws IOException {
+    try (BufferedReader br = createReader("any")) {
+      return b<caret>r.readLine();
+    }
+  }
+
+  private static BufferedReader createReader(String path) {
+    try {
+      return new BufferedReader(new FileReader(path));
+    } catch (FileNotFoundException e) {
+      // for example purposes #createReader shouldn't throw any checked exception
+      throw new RuntimeException(e);
+    }
+  }
+}

java/java-tests/testData/refactoring/inplaceIntroduceField/localResource_after.java

@@ -0,0 +1,24 @@
+import java.io.BufferedReader;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+
+class JavaClass {
+
+    private static BufferedReader br;
+
+    static String readFirstLineFromFile() throws IOException {
+    try (br = createReader("any")) {
+      return br.readLine();
+    }
+  }
+
+  private static BufferedReader createReader(String path) {
+    try {
+      return new BufferedReader(new FileReader(path));
+    } catch (FileNotFoundException e) {
+      // for example purposes #createReader shouldn't throw any checked exception
+      throw new RuntimeException(e);
+    }
+  }
+}