How to replace an existing data in an array

[Xdawn90]

hmm ... I see. Thanks for the info.

I have another question here : How am I going to delete a record(containing data) in an array ?

Thanks very much.

[chili5]

ardObject[0] = null;

Maybe?

[Xdawn90]

If I were to use that solution, will I get an error if I iterate through the array ?

Can you suggest some suitable solution for me to delete a particular object , containing fields of data, inside an array ?

Thanks.

[chili5]

Well if you try to access that item then yes.

for (int i=0;i<length;i++) {
     if (arr[i] == null) {
          continue; // no item here so ignore this entry
     }
     // process item here
}

[Sinipull]

Wrote useful little function, that removes element from array and fills the hole with other elements... so if [1,2,3,4,5] and "3" gets removed, array will be [1,2,4,5,null]

  public static void removeIndex(Object array[], int index){
    	if(index >= array.length || index < 0) return; //wrong index
    	int b = 0;
    	for(int i = 0; i < array.length; i++){
    		if(i == index) b = 1;
    		else{
    			array[i-b] = array[i];
    		}    		
    	}    	
    	array[array.length-1] = null;
   }

here's another one for inserting. it will push elements forward and if array is too small, then last one will be lost.

public static void insertIndex(Object ob, Object array[], int index){
    	if(array.getClass().getComponentType() != ob.getClass()) return; //object and array doesn't match.
    	if(index >= array.length || index < 0) return; //wrong index    	    	
    	for(int i = array.length-1; i >= 0; i--){
    		if(i > index)
    			array[i] = array[i-1];
    		else if(i == index){ 
    			array[i] = ob;
    			break;
    		}
    	}        	
}

[Xdawn90]

Thanks very much guys. I really appreciate it.