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Safe `arraycopy` Method

/ Published in: Java
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Does the same as `System.arraycopy(source, copyFrom ,target, copyTo, length)` but without worrying about invalid input. Example for an array of characters.

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  1. public void arraycopy(char[] source, int copyFrom, char[] target, int copyTo, int length) {
  2. 	// Input validation
  3. 	if(source == null || target == null)
  4. 		return;
  5. 	if(copyFrom+length >= source.length || copyTo+length >	source.length)
  6. 		return;
  7. 	// Same as: System.arraycopy(source, copyFrom, target, copyTo, length);
  8. 	for(int i=0;i<length;i++) {
  9. 		target[copyTo+i] = source[copyFrom+i];
  10. 	}
  11. }

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