How does java judge three digits?

This article mainly introduces "how to judge three digits by java". In daily operation, I believe many people have doubts about how to judge three digits by java. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about "how to judge three digits by java". Next, please follow the editor to study!

Define a test number first

Then you can convert the number into a string to determine whether its length is 3.

Gets a value that determines whether the number ranges from 100 to 1000

Or judge that the number is greater than 100 and divided by 100 or less than 10

Use a loop to process 10 or there is a value twice, and then determine whether the value divided by 10 is equal to 0.

If it is a decimal value, you can convert the number into a string and then determine the length by replacing the decimal point.

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