CODEWITHSUNDEEP
java
Thamodharan
Thamodharan

Reputation: 85

How to Choose the string which starts with small letter from a list

If I have a list containing [StudentName, ResigsterNumber, Department, grade , comment]

How can I choose only those words which starts with small letter. i.e. (grade and comment)

Upvotes: 0

Views: 100

Answers (6)

frank
frank

Reputation: 103

for (String l : list){
    char character = l.charAt(0); // This gives the first character
    if (Character.isLowerCase(character)){
        // proceed with list element with small letter found
    }
}

Upvotes: 0

Oneiros
Oneiros

Reputation: 4378

With Java 8 it is pretty easy:

List<String> list = Arrays.asList("StudentName", "Department", "grade", "comment");

List<String> filteredList = list.stream()
    .filter(s -> Character.isLowerCase(s.charAt(0)))
    .collect(Collectors.toList());

System.out.println(filteredList); // prints "[grade, comment]"

Upvotes: 2

Vishnu Yadav
Vishnu Yadav

Reputation: 1

Just loop through the elements and put them through the following condition:

boolean hasLowerCase = element.equals(element.toLowerCase());

This will allow you to check:

if(hasLowerCase){System.out.println(Element is in lowercase)};
if(!hasLowerCase){System.out.println(Element is not in lowercase)};

Upvotes: 0

Mitul Gedeeya
Mitul Gedeeya

Reputation: 896

Here is the full class with the final output printed:

    public class Test {
        public static void main(String[] args) {
            String[] testNames = new String[] { "StudentName", "ResigsterNumber", "Department", "grade", "comment" };

            List<String> names = new ArrayList<>();
            Arrays.asList(testNames).forEach((testCh) -> {
                if (testCh != null && !testCh.isEmpty() && Character.isLowerCase(testCh.charAt(0))) {
                    names.add(testCh);
                }
            });

            System.out.println(names);
        }
    }

Upvotes: 0

Courage
Courage

Reputation: 792

Just iterate through the list and select the strings whose 1 element lies between 'a' and 'z' 

 List<String> result=new ArrayList<String>();
 for(String str: list){
     if(str.charAt(0)>='a' && str.charAt(0)<='z'){
         result.add(str);
     }
 }

Upvotes: 0

Pooja Arora
Pooja Arora

Reputation: 574

You can check the ASCII value of the first letter of each word. The ASCII value of lowercase letters is between 97 to 122. Loop through the list and store the String in variable str

int i=str.charAt(0);
if(i>=97 && i<=122){
      // this is a word starting with lowercase letter
      System.out.println(str)
}

Upvotes: 0

Related Questions