code: /*
  HiddenField
  ignoreFormat = (default)null
  ignoreConstructorParameter = (default)false
  ignoreSetter = (default)false
  setterCanReturnItsClass = (default)false
  ignoreAbstractMethods = (default)false
  tokens = (default)VARIABLE_DEF, PARAMETER_DEF, PATTERN_VARIABLE_DEF, LAMBDA, RECORD_COMPONENT_DEF
  
  
  */
  
  //non-compiled with javac: Compilable with Java14
  package com.puppycrawl.tools.checkstyle.checks.coding.hiddenfield;
  
  import java.util.stream.Stream;
  
  public class InputHiddenFieldSwitchExpression {
      private int x;
      private int y;
      private int z;
      private int a;
      private int b;
      String word;
      String otherWord;
  
      int howMany1(int k, String string) {
          int x = 2; // violation
          switch (k) {
              case 1:
                  Stream.of(string.split(" "))
                          .map(word -> word.trim()) // violation
                          .anyMatch(otherWord -> "in".equals(otherWord)); // violation
                  int y = x + 1; // violation
                  x = y;
                  break;
              case 2:
                  int z = x + 2; // violation
                  x = z;
                  break;
              case 3:
                  int a = x + 3; // violation
                  x = a;
                  break;
              default:
                  int b = x + 4; // violation
                  x = b;
          }
          return x;
      }
  
      int howMany2(int k, String string) {
          int x = 2; // violation
          return switch (k) {
              case 1 -> {
                  Stream.of(string.split(" "))
                          .map(word -> word.trim()) // violation
                          .anyMatch(otherWord -> "in".equals(otherWord)); // violation
                  int y = x + 1; // violation
                  yield y;
              }
              case 2 -> {
                  int z = x + 2; // violation
                  yield z;
              }
              case 3 -> {
                  int a = x + 3; // violation
                  yield a;
              }
              default -> {
                  int b = x + 4; // violation
                  yield b;
              }
          };
      }
  }
  