Using Variables in JShell of Java 9
Prerequisite : JShell in Java 9 We can declare variables and use anywhere throughout Jshell session. Let’s create an integer variable. Semicolon (;) is optional, we can leave it and it works fine. See, variable b is created without using semicolon.
If we don’t provide variable name, Java create implicit variable to store the value. These variables start with $ sign. We can use these variable by specifying implicit variable, as we did in the following screen-shot.
We can test any valid Java expression to get instant output. See, the following example. Adding two integers Compound expression Creating and Calling Methods To test method business logic, create a method and get result immediately. See, the following example
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