I guess what this boils down to is memory allocation. Using strings concatenation, new memory is allocated each time, while using StringBuilder the buffer approximatively doubles in size when needed.
Rightly, modifying the String class creates a new String instance in the heap memory, which makes the execution of String append slow.
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I guess what this boils down to is memory allocation. Using strings concatenation, new memory is allocated each time, while using StringBuilder the buffer approximatively doubles in size when needed.
Rightly, modifying the String class creates a new String instance in the heap memory, which makes the execution of String append slow.