In this article, we will discuss how to split a String using different delimiters and collect to any Collection or List or Set

Split a String & Collect to List/Set/Collection :

Split a String using comma (,) as delimiter and collect to List using Collectors.toList();
Split a String using colon (:) as delimiter and collect to Set using Collectors.toSet();
Split a String using pipe (|) as delimiter and collect to any Collection using Collectors.toCollection();

1. Split a String using comma as delimiter & Collect to List :

Initially, we got a String with comma-separated values
Inside Arrays.stream(), split a String using comma as delimiter using String’s split() method
Then map a split-ted String using Stream.map() method to remove white-spaces if any
Collect split-ted String to List using Stream’s collect() method passing Collectors.toList() as argument
Finally, iterate & print List to console using List.forEach() method

SplitStringAndCollectToListUsingJava8Stream.java

package in.bench.resources.split.string;
 
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
 
public class SplitStringAndCollectToListUsingJava8Stream {
 
    public static void main(String[] args) {
 
 
        // original string
        String fruits = "Grapes, Apple, Mango, Banana, Orange, Melons";
        System.out.println("Original comma-separted String :- \n" + fruits);
 
 
        // split String based on comma
        List<String> fruitList = Arrays.stream(fruits.split("\\,")) // split on comma
                .map(str -> str.trim()) // remove white-spaces
                .collect(Collectors.toList()); // collect to List
 
 
        // print to console
        System.out.println("\nIterating & printing split-ted String from List :- ");
        fruitList.forEach(System.out::println);
    }
}

Output:

Original comma-separted String :- 
Grapes, Apple, Mango, Banana, Orange, Melons
 
Iterating &amp; printing split-ted String from List :- 
Grapes
Apple
Mango
Banana
Orange
Melons

2. Split a String using colon as delimiter & Collect to Set :

Initially, we got a String with colon-separated values
Inside Arrays.stream(), split a String using colon as delimiter using String’s split() method
Then map a split-ted String using Stream.map() method to remove white-spaces if any
Collect split-ted String to Set using Stream’s collect() method passing Collectors.toSet() as argument
Finally, iterate & print Set to console using Set.forEach() method

SplitStringAndCollectToSetUsingJava8Stream.java

package in.bench.resources.split.string;
 
import java.util.Arrays;
import java.util.Set;
import java.util.stream.Collectors;
 
public class SplitStringAndCollectToSetUsingJava8Stream {
 
    public static void main(String[] args) {
 
 
        // original string
        String fruits = "Grapes:Apple:Mango:Banana:Orange:Melons";
        System.out.println("Original colon-separted String :- \n" + fruits);
 
 
        // split String based on comma
        Set<String> fruitList = Arrays.stream(fruits.split("\\:")) // split on colon
                .map(str -> str.trim()) // remove white-spaces
                .collect(Collectors.toSet()); // collect to Set
 
 
        // print to console
        System.out.println("\nIterating & printing split-ted String from Set :- ");
        fruitList.forEach(System.out::println);
    }
}

Output:

Original colon-separted String :- 
Grapes:Apple:Mango:Banana:Orange:Melons
 
Iterating &amp; printing split-ted String from Set :- 
Apple
Grapes
Melons
Mango
Orange
Banana

3. Split a String using Pipe as delimiter & Collect to any Collection :

Initially, we got a String with pipe-separated values
Inside Arrays.stream(), split a String using pipe as delimiter using String’s split() method
Then map a split-ted String using Stream.map() method to remove white-spaces if any
Collect split-ted String to any Collection classes using Stream’s collect() method passing Collectors.toCollection(TreeSet::new) as argument
Finally, iterate & print Collection to console using Set.forEach() method

SplitStringAndCollectToCollectionUsingJava8Stream.java

package in.bench.resources.split.string;
 
import java.util.Arrays;
import java.util.TreeSet;
import java.util.stream.Collectors;
 
public class SplitStringAndCollectToCollectionUsingJava8Stream {
 
    public static void main(String[] args) {
 
 
        // original string
        String fruits = "Grapes|Apple|Mango|Banana|Orange|Melons";
        System.out.println("Original pipe-separted String :- \n" + fruits);
 
 
        // split String based on comma
        TreeSet<String> fruitList = Arrays.stream(fruits.split("\\|")) // split on pipe
                .map(str -> str.trim()) // remove white-spaces
                .collect(Collectors.toCollection(TreeSet::new)); // collect to Collection
 
 
        // print to console
        System.out.println("\nIterating & printing split-ted String from Collection :- ");
        fruitList.forEach(System.out::println);
    }
}

Output:

Original pipe-separted String :- 
Grapes|Apple|Mango|Banana|Orange|Melons
 
Iterating &amp; printing split-ted String from Collection :- 
Apple
Banana
Grapes
Mango
Melons
Orange

References :

Happy Coding !!
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Split a String & Collect to List/Set/Collection :

1. Split a String using comma as delimiter & Collect to List :

2. Split a String using colon as delimiter & Collect to Set :

3. Split a String using Pipe as delimiter & Collect to any Collection :

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References :

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