Question

How to filter a list of strings by first character in Java

Answer 1

import java.util.List;
import java.util.Arrays;

public class MyClass {
    public static void main(String args[]) {
        List<String> list = 
        
        Arrays.asList("java", "c", "c++", "php", "c#");

        list.stream()
            .filter(s -> s.startsWith("c"))
            .sorted()
            .forEach(System.out::println);
    }
}



/*
run:

c
c#
c++

*/

 

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Answer 2

import java.util.List;
import java.util.Arrays;

public class MyClass {
    public static void main(String args[]) {
        List<String> list = 
        
        Arrays.asList("java", "c", "c++", "php", "c#");

        list.stream()
            .filter(s -> s.startsWith("c"))
            .map(String::toUpperCase)
            .sorted()
            .forEach(System.out::println);
    }
}



/*
run:

C
C#
C++

*/

 

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