Implemented parsing usage when converting Strings to primitives

This change updates String-to-number conversions by leveraging the intended parse methods.

This change makes developer intent clearer, and sometimes with a more concise expression.

Our changes look like this:

    String number = "7.1";

-   int integerNum = Integer.valueOf(number);
+   int integerNum = Integer.parseInt(number);

-   float floatNumVal = Float.valueOf(number).floatValue();
+   float floatNumVal = Float.parseFloat(number);

-   int integerNumber = new Integer(number);
+   int integerNumber = Integer.parseInt(number);

More reading

* [https://rules.sonarsource.com/java/RSPEC-2130/](https://rules.sonarsource.com/java/RSPEC-2130/)

I have additional improvements ready for this repo! If you want to see them, leave the comment:

@pixeebot next

... and I will open a new PR right away!

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Feedback | Community | Docs | Codemod ID: sonar:java/harden-string-parse-to-primitives-s2130

nahsra / WebGoat_12_23

Implemented parsing usage when converting Strings to primitives #39

Quality Gate passed