All Questions
Tagged with dynamic-arrays java
76 questions
0
votes
2
answers
80
views
How do I Take 2D array with variable columns as input from user in Java?
I want to take a 2D array with each element as an input from user.
However, I want the user to specify in each array(i.e the column part or the each individual array) how many elements are there i.e ...
0
votes
0
answers
45
views
How to take input from user and store it in array until the user enters a specific word
I want to create a 2D array with the help of user input but the user do not specifies the length of the array. The input taken from the user should be saved in a 2D array. until the user inputs "...
- 1
0
votes
1
answer
737
views
How to resize the array in Java?
I have been trying to create my own Array class, which is dynamic, but I can't figure out the problem
in resizing the size of it. I created separate function to check if the array is full and for ...
-2
votes
1
answer
59
views
List Interface implementation
I have created in class a generic class that works like ArrayList. The class included an array that gets bigger and smaller by demand by functions. Now, I have to implement the List interface and got ...
-1
votes
1
answer
32
views
I'm trying to understand dynamic arrays, I'm stuck on line 7, this(16); Is reference to the size of the array?
I'm starting at Free Code Camps but I had never seen line 7-- this(16); I would appreciate if you told me what it does and where I can read more about it.
public class DynamicArray<T> implements ...
- 47
0
votes
2
answers
670
views
Java - Add and remove elements from a dynamic array/list
I need my array to be dynamic, as long as the user enters/deletes elements. The array can't have the length already defined or ask the user the length. For example the user decides to add 5, the array ...
- 25
-3
votes
2
answers
113
views
Java double comparison while part of a data structure [duplicate]
I was messing around with data structures and while creating a Dynamic Array in Java from scratch, I figured out that my delete method (in the DynamicArray class) was not working for doubles.
I've ...
0
votes
1
answer
84
views
Is it possible to give every spinner item a different color
In an alertdialog I have a spinner with color codes:
Spinner cSpinner = (Spinner)mView.findViewById(R.id.spinner_c);
ArrayAdapter<String> cadapter = new ArrayAdapter<String>(Cal_main.this, ...
- 59
0
votes
1
answer
54
views
No exception raised for referenced unassigned array element containing an object
MRP
class B {
static int v;
public B(int i) {
System.out.format("Constructor called with value %d\n", i);
v=i;
}
}
public class A {
static B[] c;
...
- 238
-1
votes
1
answer
360
views
Only the last element of the array is displayed [closed]
Only the last element of the array is filled; when a new element is added to the array, the old element becomes null.
public void SelectClick(View view) {
...
materialCardView.setId(secondId);
...
- 27
0
votes
2
answers
119
views
Question about "Unexpected type" for Dynamic Array
Good evening everyone, sorry for bothering.
I have a problem while trying to configure the "DynamicArray" by myself. Here I made a sort method but the terminal shows "error:unexpected ...
- 3
4
votes
0
answers
62
views
Need help declaring and assigning multidimensional arrays with different numbers of elements in Python (v Java)
I am a long time java user diving into python.
I am searching for a way to create multi-dim arrays that may not have the same number of elements, some or all are NOT known until run time.
In java I'd ...
- 1,209
-1
votes
2
answers
698
views
How to store elements in Array during runtime without knowing array size during initialization in Java? You cannot use Arraylist
static int[] evenFactorsOfNum(int num) {
int[] result = {}; // need help in this line
int index = 0;
for (int i = 2; i <= num / 2; i = i + 2) {
if (i % 2 == 0) {
...
0
votes
1
answer
45
views
How can I keep track of object lists that reference each other in java?
I'm writing a java application that has users that create contracts. The contracts have a list of supporting users that can be added to the contract. The user that created this contract is not on the ...
- 3
-2
votes
3
answers
95
views
Using variables outside while loops in java
I'am trying to write a program in Java that collects users favorite names within an array and then prints these names at the end.
NOTE: the length of the array should be defined by the number of names ...
