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  1. class Main {
  2. 	public static void main (String[] args) {
  3. 		String x = "1234";
  4. 		System.out.println(Character.isDigit(x.charAt(0)));
  5. 		x = "a123";
  6. 		System.out.println(Character.isDigit(x.charAt(0)));
  7. 	}
  8. }
  9.  
  10. //https://pt.stackoverflow.com/q/111739/101
Success #stdin #stdout 0.06s 32168KB
comments (?)
stdin
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Standard input is empty
stdout
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true
false
https://ideone.com/zCewrS
language:
Java (12.0.1)
created:
3 years ago
visibility:
secret

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