java remove empty strings from array
on channel: CodeMade
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certainly! removing empty strings from an array in java is a common task that can be achieved using various methods. below, i'll walk you through a simple tutorial on how to do this, including explanations and code examples.
tutorial: removing empty strings from an array in java
#### step 1: understanding the problem
you might have an array of strings that includes some empty strings, and you want to create a new array that contains only the non-empty strings.
example input:
desired output:
#### step 2: choosing a method
there are several ways to remove empty strings from an array. a common approach is to use a loop to check each element and store the non-empty strings in a new array or a list.
##### method 1: using a loop and arraylist
we'll use an `arraylist` to dynamically store non-empty strings, and then convert it back to an array.
#### step 3: implementation
here’s how you can implement the solution:
#### explanation of the code:
1. **input array**: we start with an array called `inputarray` that contains some empty strings.
2. **arraylist**: we create an `arraylist` called `nonemptylist` to store non-empty strings.
3. **loop**: we loop through each string in the input array. if the string is not null and not empty (using `str.isempty()`), we add it to the `nonemptylist`.
4. **conversion**: after the loop, we convert the `arraylist` back to a regular array using the `toarray()` method.
5. **output**: finally, we print the contents of the resulting array.
method 2: using java streams (java 8 and above)
if you are using java 8 or later, you can simplify this process using streams:
summary
in this tutorial, we explored two methods to remove empty strings from an array in java. the first method uses a traditional loop and an `arraylist`, while the second method leverages the power of java streams for a more concise solution. you can choose the method that best fits your style and requirements!
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