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// find value is number or not in java..
// if the value is number output is true
// if the value is not a number then output is false..
public class Test {
public static void main(String args[]) {
System.out.println(Character.isDigit('c')); // false
System.out.println(Character.isDigit('5')); // true
}
}
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String someString = "123123";
boolean isNumeric = someString.chars().allMatch( Character::isDigit );