How to convert ArrayList Chararcter elements to Integer

Question

ArrayList<Character> a = new ArrayList<Character>();
a.add('A');
a.add('B');
a.add('C');
ArrayList<Integer> s = (ArrayList<Integer>) a.clone();
System.out.println("Character: " + a + "\n Integer: " + s);

I need the answer as:

Character: [A, B, C]
Integer: [65, 66, 67]

How can I achieve this?

Review http://stackoverflow.com/questions/7443975/get-ascii-value-at-input-word — Fran Montero, Aug 06 '15 at 07:33
Please check you print statement syntax, if you are writing correct or not.. You are missing "+" before "a" in the statement. — BarathVutukuri, Aug 06 '15 at 07:37
You just need to convert between `char` and `int`. This is a straightforward thing to do. — Tim Biegeleisen, Aug 06 '15 at 07:37

Ruchira Gayan Ranaweera · Answer 1 · 2015-08-06T07:52:29.550

4

You can try this way.

List<Character> a=new ArrayList<Character>();
a.add('A');
a.add('B');
a.add('C');

List<Integer> s= new ArrayList<Integer>();
for(Character i:a){
   s.add(Integer.valueOf(i));
}

System.out.println("Character: "+a +"\nInteger: "+s);

Out put:

Character: [A, B, C]
Integer: [65, 66, 67]

edited Aug 06 '15 at 07:52

answered Aug 06 '15 at 07:45

Ruchira Gayan Ranaweera

34,993
17
75
115

1

@darijan why don't you try? please try this your own. – Ruchira Gayan Ranaweera Aug 06 '15 at 07:52

score 1 · Answer 2 · answered Aug 06 '15 at 07:34

1

You simply have to convert it into int.

ArrayList<Integer> s = new ArrayList<Integer>();

for(Character c: a) {
    s.add((int) c)
}

answered Aug 06 '15 at 07:34

Till Rohrmann

13,148
1
25
51

score 1 · Answer 3 · answered Aug 06 '15 at 07:43

1

int charCode = (int) c.charValue();

In your example

List<Integer> result = new ArrayList<Integer>();

for(Character c : a) {
    result.add((int) c.charValue());
}

answered Aug 06 '15 at 07:43

darijan

9,725
25
38

How to convert ArrayList Chararcter elements to Integer

3 Answers3