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Check whether the entered value is a digit or not in Java
To check whether the entered value is a digit or not in Java, use the Character.isDigit() method.
We have a character to be checked.
char val = '5';
Now let us use the Character.isDigit() method.
if (Character.isDigit(val)) {
System.out.println("Character is a digit!");
} else {
System.out.println("Character is not a digit!");
}Let us see the complete example now to check for Uppercase in Java.
Example
public class Demo {
public static void main(String []args) {
System.out.println("Checking for digit...");
char val = '5';
System.out.println("Value: "+val);
if (Character.isDigit(val)) {
System.out.println("Character is a digit!");
}else {
System.out.println("Character is not a digit!");
}
}
}Output
Checking for digit... Value: 5 Character is a digit!
Updated on: 26-Jun-2020
3K+ Views
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