To start you off on your assignment, String.split splits strings on a regular expression and this expression may be an empty string:
String[] ary = "abc".split("");
Yields the array:
(java.lang.String[]) [, a, b, c]
Getting rid of the empty 1st entry is left as an exercise for the reader :-)
Note: In Java 8, the empty first element is no longer included.
Answer from rsp on Stack OverflowStack Overflow
stackoverflow.com › questions › 28706423 › converting-a-string-to-an-array-of-strings-without-split
java - Converting a string to an array of strings (without .split) - Stack Overflow
(1) Identify the places at which you wish to cut your string (2) for each spot where you wish too cut, take substring of the length covering the run to the next cutting spot; save substring in a list (3) continue with the process until the entire ...
Javatpoint
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How to convert String to String array in Java
Java Program to divide a string in 'N' equal parts.
How can I split a String without using the Split method?
iterate through the String, when you reach a char that matches your split value take the string from a start position to your current position and store that in your array. Keep iterating until you reach a char that does not match your split value and set that position as your new start position.... More on reddit.com
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February 23, 2015Java- Converting a string of numbers separated by spaces into an array?
You have the right idea. String.split() will return an array of strings. Then, if you want to treat any individual string in that array as an integer you can use Integer.parseInt() . If you want to create an array of integers, just make the array that way. More on reddit.com
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February 2, 2016how does type casting work?
"casting" is usually only for trivial cases (like converting a float to an int). Converting a string to an int is more complicated and doesn't always make sense (as both types are not numeric). You can do it using function like atoi or stringstream . More on reddit.com
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August 16, 2018What is a string in Java?
A string in Java is a sequence of characters enclosed within double quotes. String in Java are immutable that means once they are created their value can’t change. Any modifications to a string results in a new string object being created. A string in Java is a sequence of characters enclosed within double quotes. String in Java are immutable that means once they are created their value can’t change. Any modifications to a string results in a new string object being created. In Java, strings are fundamental data types used extensively in software development. However, there are scenarios where
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Converting String to Array in Java: A Comprehensive Guide
How to handle empty strings when converting to an array?
You can handle empty strings by checking if the string is empty before conversion, setting a default value, or filtering out empty elements after conversion.
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Converting String to Array in Java: A Comprehensive Guide
Can we convert a string into a list instead of an array?
Yes, a string can be converted into a list by iterating over its characters or using built-in methods that transform it into a list of substrings or characters.
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Converting String to Array in Java: A Comprehensive Guide
Top answer 1 of 15
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To start you off on your assignment, String.split splits strings on a regular expression and this expression may be an empty string:
String[] ary = "abc".split("");
Yields the array:
(java.lang.String[]) [, a, b, c]
Getting rid of the empty 1st entry is left as an exercise for the reader :-)
Note: In Java 8, the empty first element is no longer included.
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String strName = "name";
String[] strArray = new String[] {strName};
System.out.println(strArray[0]); //prints "name"
The second line allocates a String array with the length of 1. Note that you don't need to specify a length yourself, such as:
String[] strArray = new String[1];
instead, the length is determined by the number of elements in the initalizer. Using
String[] strArray = new String[] {strName, "name1", "name2"};
creates an array with a length of 3.
Scaler
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Convert String to Array in Java
April 19, 2024 - We've used the &d& delimiter here. ... We can convert a string to a string array by simply passing the string in the curly brackets of String [] {}. The impact of this conversion is that a String array will be created containing a single element - the input string itself.
GeeksforGeeks
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Java Program to Convert String to String Array - GeeksforGeeks
July 23, 2025 - It is illustrated in the below illustration which is as follows: ... Lets us now discuss every method in depth implementing the same to get a better understanding of the same. They are as follows: ... Create an array with string type. Split the ...
Upgrad
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Converting String to Array in Java: A Comprehensive Guide
August 27, 2025 - It is part of the String class. Yes, you can split a string without using split() by iterating through the string, identifying delimiters manually, and extracting substrings based on their positions.
freeCodeCamp
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String to Array in Java – How to Convert Strings to Arrays
July 6, 2023 - If the delimiter is not found in the string, the original string is returned as a single element in the resulting array. Regular expressions can be complex to handle, and incorrect usage may lead to unexpected results. Splitting a large string using a complex regular expression can be computationally expensive. The StringTokenizer class in Java is a legacy class that provides a convenient way to tokenize or split a string into individual tokens. It is commonly used to convert a string to an array by splitting it based on a specified delimiter.
DigitalOcean
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How to Convert String to Array in Java | DigitalOcean
August 4, 2022 - Technical tutorials, Q&A, events — This is an inclusive place where developers can find or lend support and discover new ways to contribute to the community.
Reddit
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r/javahelp on Reddit: How can I split a String without using the Split method?
February 23, 2015 -
Hi,
I was wondering how I could take a string and split it into individual words and put those words back into a String array.
For example, the input "the quick brown fox jumped over the lazy dog" will be translated into the string array: {"the", "quick", "brown", "fox", "jumped", over", "the", "lazy", "dog"}
I can't use the split method for strings so I'm a bit stuck. I was prompted to declare a new string array with more entries than I will actually need, storing new words as I encounter space characters in this new array. Then, at the end, create a new String array with just enough entries, and copy over the non-null elements of the first array over.
I'm not sure how to implement that. Could I get some help on writing this method? Thanks in advance!
Top answer 1 of 5
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iterate through the String, when you reach a char that matches your split value take the string from a start position to your current position and store that in your array. Keep iterating until you reach a char that does not match your split value and set that position as your new start position....
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Loop through the string one character at a time. If the current character is anything but a space, add it to the end of a temporary string. If it is a space, copy the contents of the temporary string to the array, then clear the temporary string and start again. So, the pseudocode would be something like: // declare string array String[] sa = new String[100]; // declare temporary string variable String token = new String(); // loop through string fetching one char at a time int index = 0; for(i = 0 to length of string) { char ch = character at position i if (ch == ' ') { sa[index++] = token; token = ""; } else { token = token + ch; } } That's the general gist of it. You may want to look at the StringBuilder class for more efficient string manipulations, especuall StringBuilder.append() and StringBuilder.setLength().
Baeldung
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Array to String Conversions | Baeldung
September 16, 2026 - String joinedString = Joiner.on("") .skipNulls() .join(new String[]{ "Convert", "With", "Guava", null }); assertEquals("ConvertWithGuava", joinedString); Similarly, we sometimes need to split a string into an array that contains some subset of input string split by the specified delimiter, let’s see how we can do this, too. Firstly, let’s start by splitting the whitespace using the String.split() method without a delimiter:
Reddit
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r/learnprogramming on Reddit: Java- Converting a string of numbers separated by spaces into an array?
February 2, 2016 -
For example, I have String input which will look something like "5 6 6" but I need it to be converted into an array. What is the easiest way to do this? I have messed around with .split and .parseInt but have not come to any solid conclusions. Thanks!
Top answer 1 of 2
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You have the right idea. String.split() will return an array of strings. Then, if you want to treat any individual string in that array as an integer you can use Integer.parseInt() . If you want to create an array of integers, just make the array that way.
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You're on the perfect track with .split and .parseInt but it seems that you probably took a wrong step (or missed a step) in between. .split the String into a String[] array Create a new int[] with the same .length as the String[] array from step 1 loop through all the elements in the String[] array .parseInt the current array element of the String[] array to an int and place that new int in the int[] array from step 2 In a short code snippet: String text = "5 6 6"; String[] splitText = text.split(" "); // Step 1 int[] numbers = new int[splitText.length]; // Step 2 for(int i = 0; i < splitText.length; i++) { // Step 3 numbers[i] = Integer.parseInt(splitText[i]); // Step 3.1 } That's all that needs to be done, but there should also be some Exception handling in Step 3.1 (the .parseInt line should be wrapped in a try...catch statement to account for parsing errors).
W3Schools
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Java How To Convert a String to an Array
Convert a Java string into an array using split() or toCharArray().
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How To Convert String To An Array In Java | Java Full Course From Scratch - YouTube
#iballdesigningdeveloper This video is about How To Convert String To An Array In Java | Java Full Course From ScratchYou can find awesome programming lesson...
Published: July 17, 2025
Hostman
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Java Array to String and String to Array Conversion Guide
This structured arrangement offers efficient access to individual elements, making arrays a cornerstone for diverse algorithms and applications. Simultaneously, strings serve as representations of character sequences, playing an indispensable role in handling textual data. In Java, strings are treated as objects, and the language furnishes a robust set of methods for the manipulation of textual information. This tutorial provides a comprehensive guide on how to convert arrays to strings and strings to arrays in Java.
Baeldung
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Convert String to String Array | Baeldung
January 8, 2024 - In this article, we’ve learned how to convert a String to a String array in Java. Simply put, converting a string to a singleton array is pretty straightforward. If we need to break the given string into segments, we can turn to the String.split() method.
Delft Stack
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How to Perform String to String Array Conversion in Java | Delft Stack
March 13, 2025 - Regular expressions can enhance the flexibility of string manipulation in Java. The last method is to use toArray() method for list of strings to string array conversion. It inputs list in a single string and converts each individual into string ...
How to do in Java
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Convert String to String Array in Java with split()
February 22, 2023 - The limit argument works the same way as for split(). Before Java 21, we needed a lookaround regex or a Matcher loop for the same result. A blog editor sends the tags of a post as one string that people type by hand, such as ” java, Spring ,,docker “. We want a clean String[] of lowercase tags with no empty entries. String input = " java, Spring ,,docker "; String[] tags = Arrays.stream(input.split(",")) .map(String::strip) .filter(t -> !t.isEmpty()) .map(String::toLowerCase) .toArray(String[]::new); String shown = Arrays.toString(tags); // "[java, spring, docker]"
Quora
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How do convert string to string array in Java? - Quora
Quora is a place to gain and share knowledge. It's a platform to ask questions and connect with people who contribute unique insights and quality answers.
GeeksforGeeks
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Convert a String to Character Array in Java - GeeksforGeeks
// Java Program to Convert String to Character Array // Using Streams import java.util.Arrays; public class StringToCharArray { public static void main(String[] args) { // Defining a string String s = "Java"; // Converting string to character array using streams char[] ch = s.chars() .mapToObj(c -> (char) c) .collect(StringBuilder::new, StringBuilder::append, StringBuilder::append) .toString() .toCharArray(); // Convert StringBuilder to char array System.out.println(Arrays.toString(ch)); } } ... This is not an efficient way to convert string to character array. But we can split the string into individual characters using the split() method.
Published: July 12, 2025
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Convert String to Array in Java - Java2Blog
December 12, 2021 - A Set is a collection that only supports unique elements and it provides us with a method that we can leverage to convert a string to an array. This method is called toArray() and is a generic method which means it can also be applied to other ...