Telegram Group & Telegram Channel
What is the result of the following code?
public class Lion {
public void roar(String roar1, StringBuilder roar2) {
roar1.concat("!!!");
roar2.append("!!!");
}
public static void main(String[] args) {
String roar1 = "roar";
StringBuilder roar2 = new StringBuilder("roar");
new Lion().roar(roar1, roar2);
System.out.println(roar1 + " " + roar2);
} }


A. roar roar
B. roar roar!!!
C. roar!!! roar
D. roar!!! roar!!!
E. An exception is thrown.
F. The code does not compile.

Explanation:
A String is immutable. Calling concat() returns a new String but does not change the original. A StringBuilder is mutable. Calling append() adds characters to the existing character sequence along with returning a reference to the same object



tg-me.com/topJavaQuizExplain/44
Create:
Last Update:

What is the result of the following code?

public class Lion {
public void roar(String roar1, StringBuilder roar2) {
roar1.concat("!!!");
roar2.append("!!!");
}
public static void main(String[] args) {
String roar1 = "roar";
StringBuilder roar2 = new StringBuilder("roar");
new Lion().roar(roar1, roar2);
System.out.println(roar1 + " " + roar2);
} }


A. roar roar
B. roar roar!!!
C. roar!!! roar
D. roar!!! roar!!!
E. An exception is thrown.
F. The code does not compile.

Explanation:
A String is immutable. Calling concat() returns a new String but does not change the original. A StringBuilder is mutable. Calling append() adds characters to the existing character sequence along with returning a reference to the same object

BY Explanations “Top Java Quiz Questions”


Warning: Undefined variable $i in /var/www/tg-me/post.php on line 283

Share with your friend now:
tg-me.com/topJavaQuizExplain/44

View MORE
Open in Telegram


telegram Telegram | DID YOU KNOW?

Date: |

A Telegram spokesman declined to comment on the bond issue or the amount of the debt the company has due. The spokesman said Telegram’s equipment and bandwidth costs are growing because it has consistently posted more than 40% year-to-year growth in users.

telegram from br


Telegram Explanations “Top Java Quiz Questions”
FROM USA