indexOf

[21091958]

Hello all
I am newbie in java, I have an arrayList of elements (String), i need to be able to read the index of any element of that list
I have tried that but no good
public E indexOf (int index){
if (index<0 || index>=size)
throw new IndexOutOfBoundsException(""+index);

for(int i=0; i<size;i++ )
if (E[]theArray = theArray[index])
r = theArray[index];
return r;
}
cheers

 

[sedj]

String s = (String)arrayList.get(index);

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[21091958]

Hi Sedj
This code return this error
cannot invoke get(int) on the array type [E]
Thank you

 

[stefanwagner]

do you have an array, or an ArrayList?

Note that you need two equal-signs for comparision:
if (a==b) - not if (a = b).
But for Objects, you will normally use 'equals'
if (a.equals (b))


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[sedj]

Well you did say you had an arrayList - which I took to mean java.util.ArrayList !

Change this line :

if (E[]theArray = theArray[index])

to :

if (E[]theArray.equals(theArray[index]))

--------------------------------------------------
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http://www.primrose.org.uk

 

[21091958]

Great thank you for yor help