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Stop Reinventing the Wheel! 20 Efficient Utility Classes Built into SpringBoot

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Still writing your own utility classes?

You’re being left behind by SpringBoot!

Many people say “don’t reinvent the wheel,”

but end up writing String utilities, Bean copying, file handling,

and reflection operations over and over in their projects.

SpringBoot has 20 hidden gems built-in — lightweight, high-performance, and loosely coupled tools that many top architects are using,

but you might not have even heard of them!

Some say, “Using these is like having a superpower.”

Others argue, “They’re too much of a black box; I’d rather write my own.”

What do you think?

I. Data Processing

1. StringUtils

The StringUtils

provided by Spring is more lightweight than the Apache Commons Lang version and integrates perfectly with the Spring ecosystem. It provides common operations like checking for empty strings, trimming, and joining.

// Check if a string is empty

StringUtils.isEmpty(str)…