How can I replicate PHP\'s `join()` function for array manipulation in Java?

Achieve PHP's join() Function in Java for Array Manipulation

In Java, achieving the functionality of PHP's join() function for arrays requires alternative methods.

Java 8 String.join()

For Java versions 8 and above, the String.join() method offers a straightforward solution:

<code class="java">String.join(", ", new String[]{"Hello", "World", "!"})</code>

This code snippet concatenates the array elements with a comma and space separator, resulting in:

Hello, World, !

Apache Commons Lang StringUtils.join()

Prior to Java 8 or for compatibility with earlier versions, the Apache Commons Lang library provides a StringUtils class with a join() function. This method also joins array elements into a String:

<code class="java">StringUtils.join(new String[] {"Hello", "World", "!"}, ", ")</code>

Similar to the String.join() example, this code generates the same output:

Hello, World, !

Additional Notes:

• Both methods accept an array of Strings as the first parameter and a separator String as the second parameter.
• The separator String is interpolated between each element in the output String.

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