beforeFilterMapFlatMapArrayMapCollect.java

// "Replace with collect" "true"
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class Main {
  public void test(Map<String, String[]> map) {
    List<String> result = new ArrayList<>();
    for(Map.Entry<String, String[]> entry: m<caret>ap.entrySet()) {
      if(entry.getKey().startsWith("x")) {
        String[] arr = entry.getValue();
        for (String str : arr) {
          str = str.trim();
          result.add(str);
        }
      }
    }
  }
}