The java.lang.Character.isLetterOrDigit(char ch) is an inbuilt method in java which determines if the specified character is a letter or digit.
public static boolean isLetterOrDigit(char ch)
Parameters: The function accepts a single mandatory parameter ch which signifies the character to be tested.
Return value: This function returns a boolean value. The boolean value is true if the character is a letter or digit else it false.
Below programs illustrate the above method:
Z is a letter/digit ? true 2 is a letter/digit ? true
D is a letter/digit ? true / is a letter/digit ? false
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