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  1.  
  2. class Ideone {
  3. 	public static void main (String[] args) {
  4. 		String x = "1234";
  5. 		System.out.println(x.charAt(0) >= '0' && x.charAt(0) <= '9');
  6. 		x = "a123";
  7. 		System.out.println(x.charAt(0) >= '0' && x.charAt(0) <= '9');
  8. 	}
  9. }
Success #stdin #stdout 0.1s 320576KB
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stdin
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Standard input is empty
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true
false
https://ideone.com/TKr4vv
language:
Java (12.0.1)
created:
8 years ago
visibility:
secret

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