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  1. import java.util.Arrays;
  2.  
  3. class Ideone {
  4. 	public static void main (String[] args) {
  5. 		System.out.println(padLeft("This", 10, '0'));
  6. 		System.out.println(padLeft("This is", 10, '0'));
  7. 		System.out.println(padLeft("This is a", 10, '0'));
  8. 		System.out.println(padLeft("This is a test", 10, '0'));
  9. 	}
  10. 	public static String padLeft(String value, int width, char pad) {
  11. 		if (value.length() >= width)
  12. 			return value;
  13. 		char[] buf = new char[width];
  14. 		int padLen = width - value.length();
  15. 		Arrays.fill(buf, 0, padLen, pad);
  16. 		value.getChars(0, value.length(), buf, padLen);
  17. 		return new String(buf);
  18. 	}
  19. }
Success #stdin #stdout 0.11s 320576KB
comments (?)
stdin 
Standard input is empty
stdout 
000000This
000This is
0This is a
This is a test
https://ideone.com/iANoZ6
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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