Modify specific characters within String ArrayList [duplicate]

Question

So we have the following:

ArrayList<String> list = ( new ArrayList<String>( ) );

list.add( new String( "hello" ) ); // add first word at position [0]
list.add( new String( "world" ) ); // add second word at position [1]

I do not want to use the .replace method as that will replace ALL the occurrences. Suppose I only want to modify the first "l" in the hello word and change it to "x", how would I do that? I only want to target a specific element # within the string within the array.

System.out.println( list ); // display the full arraylist

Initial Output:

[hello, world]

Desired Output:

[hexlo, world]

Answer 1

You for example can use the list.set() Method like so:

list.set(index, list.get(index).modifyingStringMethodhere());

Modifying the String, to your desires, is pretty simple, there are tons of tools that java natively supports.