Java Error about Array methods add() and remove()?

Java Error about Array methods add() and remove()?

By : Marlon Broned
Date : November 17 2020, 11:55 AM
Hope this helps Try replacing int currentKeys[] = {}; with ArrayList currentKeys = new ArrayList();
code :
currentKeys[index] = newValue;
int[] currentKeys = {};
int[] currentKeys = new int[2];
ArrayList<Integer> currentKeys = new ArrayList<Integer>(); //Create an empty arraylist
currentKeys.add(2); //Add 2 to the back of the arraylist. Now [2].
currentKeys.add(3); //Add 3 to the back of the arraylist. Now [2, 3].
int first = currentKeys.get(0); //Gets the value at index 0 (0 being the first position), -> 2
currentKeys.set(1, 5); //Sets the value at index 1 to 5. Now [2, 5].

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Java Game error (Array, this. , methods)

Java Game error (Array, this. , methods)

By : user2517157
Date : March 29 2020, 07:55 AM
Does that help One problem is you should remove the i in Alien alien[i] in your setInfo() argument list. You might also want to consider removing it from the argument list entirely as you don't use it, or perhaps not using it is another mistake you need to fix.
You also need to change the declaration of variable type1 to call it type instead, as that's what you use in several places further down.
Java: A few error while implementing a multidimensional array with methods

Java: A few error while implementing a multidimensional array with methods

By : B. Bakken
Date : March 29 2020, 07:55 AM
around this issue In the problematic line - you should use dizi[i].length instead of dizi.length[i].
The reason is dizi is of type int[][] and thus dizi[i] is of type int[] - which is an array, but dizi.length is an int, and you actually tried to access an element in an int - which is impossible!
code :
public int[][] doldur() { // ========> fill method
for (int i = 0; i < dizi.length; i++) {
    for (int j = 0; dizi[i] != null && j < dizi[i].length; j++) { 
      //               ^                         ^
      //           not null                   dizi[i].length 
      //                                         instead of
      //                                      dizi.length[i]
      // Do domething

Java applet throws error in remove object from Iterator array

Java applet throws error in remove object from Iterator array

By : Dubwizer
Date : March 29 2020, 07:55 AM
this one helps. Maybe when you call repaint() in run(), paint() is queued to EDT and called as soon as possible; while iterating locatablesArray a call to initLocatables2() in run() is done another time and the re-init of locatablesArray in the same time the code of paint() will produce the error.
My advice is to separate init operation in a specific init section and call it once, the run your main loop.
Java: Run-time error during remove in an array list

Java: Run-time error during remove in an array list

By : Arjun
Date : March 29 2020, 07:55 AM
I wish did fix the issue. You can't safely modify the contents of a List while iterating through it with an Iterator. Use a ListIterator to do this.
code :
ListIterator<Student> it = myRoster.listIterator();
while (it.hasNext()) {
    Student b = it.next();
    if (b.getStudentId() == studentId) {
        it.remove(); // Removes b from myRoster
How to remove array elements and append it to the front of the array in ruby without using any inbuilt methods?

How to remove array elements and append it to the front of the array in ruby without using any inbuilt methods?

By : Ivan Bartolin
Date : March 29 2020, 07:55 AM
it should still fix some issue You could create a new Array with the elements at the correct position thanks to modulo:
code :
array = %w[a b c d e f g h i]
shift = 3
n = array.size
p Array.new(n) { |i| array[(i - shift) % n] }
# ["g", "h", "i", "a", "b", "c", "d", "e", "f"]
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