Online Training Spring Hibernate Training in Delhi R Programming Training Course Big Data and Hadoop Training Java Training  
 

Array list in Java - arraylist type error

Ads

 
 

Share on Google+Share on Google+

Java Coder
Array list in Java - arraylist type error
2 Answer(s)      5 years and 3 months ago
Posted in : Java Beginners

I am using Array list in Java but when i compile i get array list type error. Can anyone please explain what is array list type error and why it occurs?

Ads
View Answers

May 10, 2012 at 2:58 PM


Type error occurs due to mismatch of data type. In this example, Arraylist is of Integer type - ArrayList<Integer>
Data Apple and Cherry are String type. So When you try to add String data into Integer type ArrayList, it will generate error.

In the same way when you try to add integer data into String type ArrayList ,error occurs.

Whenever you declare Arraylist type beware in the time of adding data.



May 10, 2012 at 2:58 PM


import java.util.*;
public class ArraylistTypeError {
  public static void main(String[] args) {
  ArrayList<Integer> list = new ArrayList<Integer>();


  list.add("Apple");
  list.add("Cherry");

 System.out.println(list);
}
}

Ads









Related Tutorials/Questions & Answers:
the array list contains similar type of elements or disimilar type of elements
the array list contains similar type of elements or disimilar type of elements  the array list contains similar type of elements or disimilar type of elements
Spring Wire Array Type To List Element Example
Spring <list> Configuration Element to wire Array type property The list... is of String array type. import java.util.*; public class Product { private String... is used to get property of String array type. import
Advertisements
Create list from array in Java
Create list from array in Java  Hi, I have an array with some data. How to Create list from array in Java? Thanks   Hi, Here is example of creating of creating an array: String[] names = new String[]{"Java", "JSP
Java Error In comapitable Type in statement - Java Beginners
Java Error In comapitable Type in statement  Here I want to Check...(j1,"Error in submitting data!"); }//end catch }// end Action...(Exception e){ JOptionPane.showMessageDialog(j1,"Error in submitting data
Java error illegal start of type
Java error illegal start of type       The Java error illegal start of type...;} } On Compilation the code show an illegal start of type error. Output
incompatble type error
); } } } trows incampatble type error...incompatble type error  class ArithmeticExceptiontest { public static void main(String args[]) { int num1 = 0; int num2=10
PHP Array Type
PHP Array Types: In PHP an array is more than just array, it is an ordered map. A map is a type that we can associate values to keys. We can consider it as an array, list or vector, hash table, etc.  In associative array a key may
array accept all data type
array accept all data type  how can create array that accept all data type??? if we can solution it? how..   Hi Friend, Try the following code: import java.lang.reflect.*; class CreateArrayOfAllTypes{ public
array accept all data type
array accept all data type  how can create array that accept all data type??? if we can solution it? how..   Hi Friend, Try the following code: import java.lang.reflect.*; class CreateArrayOfAllTypes{ public
Two dimensional array in java
Two dimensional array in java. In this section you will learn about two-dimensional array in java with an example. As we know that array is a collection... dimensional array is defined as an "array of array". In java the element
array list example
array list example  Array list example   Hello Friend, Please visit the following links: Array List Example1 Array List Example2 Thanks
Array in Java
of same type in memory. The size or length of an array is fixed when the array.... Different types of array used in Java are One-dimensional, Two-dimensional and multi... of an Array Initialization of an Array Arrays in Java for different data
array of students with marks list
array of students with marks list  There are 4 array of numbers or scores as below. They are called marks list and represent the scores individual... across all lists and also the number of students (4 in this case). Marks List 1
getting html list in a array
getting html list in a array  hi i want to get html unordered list in a array using jsp
getting html list in a array
getting html list in a array  hi i want to get html unordered list in a array using jsp
Convert List to Array
Convert List to Array       Lets see how to convert List to Array.  Code Description: In this program we have taken a List of type String as shown below. For this we have used
Java Array Length
Java Array Length In this section you will find a program to find the length of array in java. An array is collection of similar data type. To find the length of array is a simple program in java. Using length function you can find
Java Array Length
Java Array Length       In this section, you will learn about the java array length. The java array... about array click on: http:/www.roseindia.net/java/language/introduction-to-java
data type used to store name.(getting an error)
data type used to store name.(getting an error)    Statement stm=con.createStatement(); String query="select * from employee where ename... getting an error like dis: "ename cannot be resolved to a variable" whats
Java error
Java error  class WhileLoopMethod{ public static void main(String... = 88; while(a } //it is giving compile time error .....illegal start of type
Java error
Java error  class WhileLoopMethod{ public static void main(String... = 88; while(a } //it is giving compile time error .....illegal start of type
PHP Type Hinting
a value into objects of a class or to an array. Type Hints only supports object and array type, other primitive types like int and string are not supported. Go... about the cause of the error and type hinting more preciously
java array
java array  q4.array Write a program that accepts two arrays, an array of fruit names and an array of price of fruits, and a fruit name and returns the price of the fruit. (Assume that a price in the second array corresponds
Java array
Java array   How can one prove that the array is not null but empty
Convert Array to List
Convert Array to List       In this section, you will learn to convert an Array to List.  Code Description: This program helps you in converting an Array to List. Here we
Java array
Java array  Java program to find first two maximum numbers in an array,using single loop without sorting array
What is Array in Java?
What is Array in Java?  Hi, What is Array in Java? How to create an array in Java and use it? Thanks   Hi, Array is very important in Java as it is used heavily in programming. Array is Java is a container object
Creating Multiple Type List
Creating Multiple Type List     ... type choice option. In this example user can make selection in name list and after... type list as follows: list = new List("Multiple Option", List.MULTIPLE
Java type casting
Java type casting  What is Downcasting
Use of Array in Java
Use of Array in Java      ... object which can hold a values of same type. The length of an array is created...];. It will create an array of type int which can store 5 integer values. The next way
eraser type generics in java
eraser type generics in java  Explain eraser type generics in java with example