Assume that x is a char variable that has been declared and already given a value. Write an expression whose value is true if and only if x is alphanumeric, that is either a letter or a decimal digit.

Question

Computers and Technology

Alisha

2 December, 01:59

Assume that x is a char variable that has been declared and already given a value. Write an expression whose value is true if and only if x is alphanumeric, that is either a letter or a decimal digit.

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Answers (1)

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Kara Blackburn · Answer 1

In Java, the character class has both an isDigit method and an isLetter method.

if (Character. isDigit (a) || Character. isLetter (a)) {

return true;

} else {return fase; }