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Custom ArrayList in Java
A custom ArrayList can have multiple types of data and its attributes in general are based on the user requirements.
A program that demonstrates a custom ArrayList is given as follows −
Example
import java.util.ArrayList;
public class CustomArrayList {
int n = 5;
class Employee {
int eno;
String name;
Employee(int eno, String name) {
this.eno = eno;
this.name = name;
}
}
public static void main(String args[]) {
int eno[] = {101, 102, 103, 104, 105};
String name[] = {"Jane", "Mary", "Adam", "Harry", "John"};
CustomArrayList caList = new CustomArrayList();
caList.add(eno, name);
}
public void add(int eno[], String name[]) {
ArrayList<Employee> aList = new ArrayList<>();
for (int i = 0; i < n; i++) {
aList.add(new Employee(eno[i], name[i]));
}
print(aList);
}
public void print(ArrayList<Employee> aList) {
for (int i = 0; i < n; i++) {
Employee e = aList.get(i);
System.out.println("
Employee Number: " + e.eno);
System.out.println("Employee Name: " + e.name);
}
}
}The output of the above program is as follows −
Output
Employee Number: 101 Employee Name: Jane Employee Number: 102 Employee Name: Mary Employee Number: 103 Employee Name: Adam Employee Number: 104 Employee Name: Harry Employee Number: 105 Employee Name: John
Updated on: 30-Jul-2019
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