Java: change an element in a prepopulated List of string array

Question

I have a List of string array already populated in storeInv. How do i change a specific element in the string array? For example the code below...

Thanks =]

List <String[]> storeInv ;  //assume already populated with elements
String[] store = storeInv.get(5);
store[1] = 123;

store.set(5, store[1]);  //this gives me an error.

@battousai622: you mean something like store[5] = store[1] ? — SyntaxT3rr0r
– SyntaxT3rr0r, Commented Jun 8, 2010 at 0:32
I'm pretty sure you mean storeInv.set(5, store); But you don't need to, because it's already there. — Carl Manaster
– Carl Manaster, Commented Jun 8, 2010 at 1:07

Stephen C · Accepted Answer · 2013-01-17 22:06:47Z

5

List <String[]> storeInv = ...
String[] store = storeInv.get(5);

// This updates an element in one of the arrays.  (You cannot
// assign an integer literal to a String or a String array element.)
store[1] = "123";

// Compilation error!  'store' is an array, so there is no 'set' method.
store.set(5, store);

// This updates an array in the list ... but in this
// case it is redundant because the 5th list element
// is already the same object as 'store'.
storeInv.set(5, store);

edited Jan 17, 2013 at 22:06

answered Jun 8, 2010 at 0:39

Stephen C

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1 Comment

David West Over a year ago

the set method isn't working for me. I can't get it to show up in the autocomplete in Eclipse, and I try using it on a String[]. Huh?

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