Question

How can i save numbers in List, where i could sort it from minimum to maximum.
I created new string where i insert all numbers. Than i get in in List and sort it. After that i check a number and i get colour od icon.

I tried this:

import java.util.Collections;
import java.util.ArrayList;
import java.io.*;

int colour1 = 1;
int colour2 = 3;
int colour3 = 2;
int colour4 = 3;

String rezerva =colour1, colour2, colour3, colour4;
List<String> myList = new ArrayList(rezerva);
Collections.sort(myList);

colour1 = myList.get(0);

if (colour1==1){
//change icon to red
}
else if (colour1==2){
//change icon to white
}
else {
//change icon to black
}

Answer 1

Use Integer instead of String for your list

    Integer colour1=1;
    Integer colour2=3;
    Integer colour3=2;
    Integer colour4=3;

    ArrayList<Integer> myList = new ArrayList<Integer>();
    myList.add(colour1);
    myList.add(colour2);
    myList.add(colour3);
    myList.add(colour4);
    Collections.sort(myList);