Java calculation mathematical expression code explanation

Java string is converted into arithmetic expression to calculate and output the result. Through this tool, you can directly calculate the arithmetic expression in string form, and it is very simple to use.

This tool contains two classes, calculator and arithhelper

The calculator code is as follows:

The arithhelper code is as follows:

When in use, call the conversion () method of the calculator class and pass in the arithmetic expression parameter to return a double type value.

Use example:

Console output:

Test screenshot:

summary

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