How to increase the size of an array in Java?

Question

I want to store as many elements as desired by the user in an array. But how do I do it.

If I were to create an array, I must do so with a fixed size. Every time a

Answer 1

u can use array list for that

here is example for array list of string

'import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList;

public class Ex01 {

public static void main(String[] args) throws IOException { 

    BufferedReader userInput = new BufferedReader 
        (new InputStreamReader(System.in));

    ArrayList myArr = new ArrayList();
    myArr.add("Italian Riviera");
    myArr.add("Jersey Shore");
    myArr.add("Puerto Rico");
    myArr.add("Los Cabos Corridor");
    myArr.add("Lubmin");
    myArr.add("Coney Island");
    myArr.add("Karlovy Vary");
    myArr.add("Bourbon-l'Archambault");
    myArr.add("Walt Disney World Resort");
    myArr.add("Barbados");

    System.out.println("Stupid Vacation Resort Adviser");
    System.out.println("Enter your name:");
    String name = userInput.readLine();
    Integer nameLength = name.length();
    if (nameLength == 0) 
    { 
        System.out.println("empty name entered");
        return;
    } 

    Integer vacationIndex = nameLength % myArr.size();

    System.out.println("\nYour name is "+name+", its length is " + 
                    nameLength + " characters,\n" +
                    "that's why we suggest you to go to " 
                    + myArr.get(vacationIndex));
} 

}'

similarly u can make array for integer,blooean and all kinds of data types

for more detail u can see this

http://www.anyexample.com/programming/java/java_arraylist_example.xml