3. Consider the following piece of code: public static void main(String[] args) { = new BankACSQunt (500); RankAccount a BankAccount b = new BankAcgount (a.getkalance() ); RankAcsount c = a; Identify all of the expressions that are true: a) (aeauals( 5 00 )) b)(aaauals(b)) c) (a == 500) d) (a == b) e)(a == c) f) (angetRalance () == 500) g)(angetkalance() kugetRalance( ) ) ==
3. Consider the following piece of code: public static void main(String[] args) { = new BankACSQunt (500); RankAccount a BankAccount b = new BankAcgount (a.getkalance() ); RankAcsount c = a; Identify all of the expressions that are true: a) (aeauals( 5 00 )) b)(aaauals(b)) c) (a == 500) d) (a == b) e)(a == c) f) (angetRalance () == 500) g)(angetkalance() kugetRalance( ) ) ==
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question
JAVA
![**Code Analysis and True Expression Identification**
In this exercise, we will analyze a segment of Java code related to handling bank account objects.
```java
public static void main(String[] args) {
BankAccount a = new BankAccount(500);
BankAccount b = new BankAccount(a.getBalance());
BankAccount c = a;
}
```
**Objective**
Identify which of the listed expressions evaluate to `true` upon execution of the above code.
**Expressions to Evaluate**
a) `a.equals(500)`
b) `a.equals(b)`
c) `(a == 500)`
d) `(a == b)`
e) `(a == c)`
f) `(a.getBalance() == 500)`
g) `(a.getBalance() == b.getBalance())`
**Explanation**
- **Expression a** involves checking if object `a` is equal to the integer `500`, which typically returns false unless the `equals` method is overridden to handle this situation.
- **Expression b** uses the `equals` method to compare `a` and `b`. This returns true if the method is overridden in the BankAccount class to compare account balances.
- **Expression c** checks reference equality between `a` and `500`, which is always false as `a` is an object, not an integer.
- **Expression d** compares if references `a` and `b` point to the same object in memory. This returns false since they are instantiated separately.
- **Expression e** evaluates the reference equality between `a` and `c`. This returns true because `c` is assigned to `a`.
- **Expression f** verifies if the balance of `a` is 500, which should return true given the constructor's initial value.
- **Expression g** checks if balances of `a` and `b` are equal. This returns true since `b` is initialized with `a`'s balance.
**Conclusion**
Thus, the expressions that evaluate to `true` are: **e, f,** and **g.**](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb4deeaa2-280e-4afd-b08f-ce2df53e06a4%2Fb1ef92be-f601-4e6c-9c30-0c51fbcb8d74%2F49r0y2_processed.png&w=3840&q=75)
Transcribed Image Text:**Code Analysis and True Expression Identification**
In this exercise, we will analyze a segment of Java code related to handling bank account objects.
```java
public static void main(String[] args) {
BankAccount a = new BankAccount(500);
BankAccount b = new BankAccount(a.getBalance());
BankAccount c = a;
}
```
**Objective**
Identify which of the listed expressions evaluate to `true` upon execution of the above code.
**Expressions to Evaluate**
a) `a.equals(500)`
b) `a.equals(b)`
c) `(a == 500)`
d) `(a == b)`
e) `(a == c)`
f) `(a.getBalance() == 500)`
g) `(a.getBalance() == b.getBalance())`
**Explanation**
- **Expression a** involves checking if object `a` is equal to the integer `500`, which typically returns false unless the `equals` method is overridden to handle this situation.
- **Expression b** uses the `equals` method to compare `a` and `b`. This returns true if the method is overridden in the BankAccount class to compare account balances.
- **Expression c** checks reference equality between `a` and `500`, which is always false as `a` is an object, not an integer.
- **Expression d** compares if references `a` and `b` point to the same object in memory. This returns false since they are instantiated separately.
- **Expression e** evaluates the reference equality between `a` and `c`. This returns true because `c` is assigned to `a`.
- **Expression f** verifies if the balance of `a` is 500, which should return true given the constructor's initial value.
- **Expression g** checks if balances of `a` and `b` are equal. This returns true since `b` is initialized with `a`'s balance.
**Conclusion**
Thus, the expressions that evaluate to `true` are: **e, f,** and **g.**
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