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2.  a)What is the index where “first” is stored? b)What is the capacity of the ArrayList? c)What is the size of the ArrayList? d)Write the Java code that would insert the the Strings “first”, “second”, “third” into the original arraycreated in the above. e)What would happen if you inserted the Strings “first”, “second”, “third” and “fourth” into the original array?

2.  a)What is the index where “first” is stored? b)What is the capacity of the ArrayList? c)What is the size of the ArrayList? d)Write the Java code that would insert the the Strings “first”, “second”, “third” into the original arraycreated in the above. e)What would happen if you inserted the Strings “first”, “second”, “third” and “fourth” into the original array?

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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2. 

a)What is the index where “first” is stored?

b)What is the capacity of the ArrayList?

c)What is the size of the ArrayList?

d)Write the Java code that would insert the the Strings “first”, “second”, “third” into the original arraycreated in the above.

e)What would happen if you inserted the Strings “first”, “second”, “third” and “fourth” into the original array?

### Understanding ArrayList in Java An `ArrayList` in Java is a resizable array, which can be found in the `java.util` package. It is part of Java's collections framework and implements the `List` interface. Unlike standard arrays that have a fixed length, an `ArrayList` can automatically resize itself when elements are added or removed. #### Inserting Elements into an ArrayList When we insert elements into an `ArrayList`, it dynamically adjusts its size. Here is an example to illustrate this behavior. **Example: Adding a String to an ArrayList** 1. **Problem Statement:** We want to insert the String "first" into an `ArrayList`. 2. **Visualization:** The following diagram shows what the `ArrayList` looks like after inserting the String "first": ``` ----------------------- | | first | | ----------------------- ``` In this diagram, we observe that after inserting the String "first", the `ArrayList` has adjusted itself to accommodate the new element. Initially, the `ArrayList` might contain empty slots for future insertions. To summarize, the image shows a simple visualization of the `ArrayList` containing one element ("first") in its first position, with additional capacity allocated for potential future entries.
Transcribed Image Text:### Understanding ArrayList in Java An `ArrayList` in Java is a resizable array, which can be found in the `java.util` package. It is part of Java's collections framework and implements the `List` interface. Unlike standard arrays that have a fixed length, an `ArrayList` can automatically resize itself when elements are added or removed. #### Inserting Elements into an ArrayList When we insert elements into an `ArrayList`, it dynamically adjusts its size. Here is an example to illustrate this behavior. **Example: Adding a String to an ArrayList** 1. **Problem Statement:** We want to insert the String "first" into an `ArrayList`. 2. **Visualization:** The following diagram shows what the `ArrayList` looks like after inserting the String "first": ``` ----------------------- | | first | | ----------------------- ``` In this diagram, we observe that after inserting the String "first", the `ArrayList` has adjusted itself to accommodate the new element. Initially, the `ArrayList` might contain empty slots for future insertions. To summarize, the image shows a simple visualization of the `ArrayList` containing one element ("first") in its first position, with additional capacity allocated for potential future entries.
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