Java String split() Method with examples

Java String split method is used for splitting a String into its substrings based on the given delimiter or regular expression.

String: chaitanya@singh

Regular Expression: @

Output : {"chaitanya", "singh"}

delimiter is a character that identifies the beginning or the end of a character string. An example of a delimiter is the comma character, which acts as a field delimiter in a sequence of comma-separated values.

Example 1: showing the split(): array output

package com.cerotid.fundamentals.split;

public class SplitDemo {

public static void main(String[] args) {

String str = new String("28/12/2013");

String[] array2 = str.split("/");

for (String temp2 : array2) {

System.out.println(temp2);

}

}

}

Output:

28

12

2013

Example 1: showing the split(): arraylist output

package com.cerotid.fundamentals.split;

import java.util.Arrays;

public class SplitDemo {

public static void main(String[] args) {

String str = new String("28/12/2013");

String[] array1 = str.split("/");

for (String temp1 : array1) {

System.out.println(Arrays.asList(temp1));

}

}

}

Output:

[28]

[12]

[2013]

ArrayList<String> cars = new ArrayList<String>(); // Create an ArrayList object

import java.util.ArrayList;

public class MyClass {

public static void main(String[] args) {

ArrayList<String> cars = new ArrayList<String>();

cars.add("Volvo");

cars.add("BMW");

cars.add("Ford");

cars.add("Mazda");

System.out.println(cars);

}

}

Output:

[Volvo, BMW, Ford, Mazda]

Java Arrays:

Arrays are used to store multiple values in a single variable, instead of declaring separate variables for each value. To create an array of String, you could write:

String[] cars = {"Volvo", "BMW", "Ford", "Mazda"};

To create an array of integers, you could write:

int[] myNum = {10, 20, 30, 40};

Access the Elements of an Array

You access an array element by referring to the index number.

String[] cars = {"Volvo", "BMW", "Ford", "Mazda"};

System.out.println(cars[0]);

// Outputs Volvo

Loop Through an Array with For-Each

The following example outputs all elements in the cars array, using a "for-each" loop:

Loop Through an Array with For-Each

String[] cars = {"Volvo", "BMW", "Ford", "Mazda"};

for (String i : cars) {

System.out.println(i);

}

Output:

Volvo

BMW

Ford

Mazda

Java ArrayList:

Example

Create an ArrayList object called cars that will store strings:

import java.util.ArrayList; // import the ArrayList class

ArrayList<String> cars = new ArrayList<String>(); // Create an ArrayList object

import java.util.ArrayList;

public class MyClass {

public static void main(String[] args) {

ArrayList<String> cars = new ArrayList<String>();

cars.add("Volvo");

cars.add("BMW");

cars.add("Ford");

cars.add("Mazda");

System.out.println(cars);

}

}

Output:

[Volvo, BMW, Ford, Mazda]

Loop Through an ArrayList

public class MyClass {

public static void main(String[] args) {

ArrayList<String> cars = new ArrayList<String>();

cars.add("Volvo");

cars.add("BMW");

cars.add("Ford");

cars.add("Mazda");

for (String i : cars) {

System.out.println(i);

}

}

}

Output:

Volvo

BMW

Ford

Mazda