Which of the following is a valid Java variable name?Question 5Answera._variableb.123variablec.variable#d. $variable
Question
Which of the following is a valid Java variable name?Question 5Answera._variableb.123variablec.variable#d. $variable
Solution
The valid Java variable name from the options provided is:
a. _variable d. $variable
In Java, variable names are case-sensitive and must begin with a letter (defined as a Unicode character), the dollar sign "$", or the underscore character "_". After the first character, variable names can also contain digits. Therefore, "123variable" and "variable#" are not valid because they start with a digit and contain a special character, respectively.
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