What is autounboxing in Java?

A

The automatic conversion of wrapper classes to their corresponding primitive types

B

The process of converting a string to an integer

C

A feature for boxing objects

D

A feature for manually converting wrapper classes to primitive types

What is autounboxing in Java? Correct Answer The automatic conversion of wrapper classes to their corresponding primitive types

মোঃ আরিফুল ইসলাম

Feb 20, 2025

Related Questions

In Java, which method can be used to perform autounboxing?

A

`.valueOf()`

B

`.equals()`

C

`.intValue()`

D

`.compareTo()`

In Java, which of the following is an example of autounboxing?

A

`String text = "Hello";`

B

`int value = Integer.parseInt("42");`

C

`Double result = 3.14;`

D

`String text = "Hello";`

A UNIX user named Bob wants to replace his chess program with a new one, but he is not sure where the old one is installed. Bob is currently able to run a Java chess program starting from his home directory /home/bob using the command: java -classpath /test:/home/bob/downloads/*.jar games.Chess Bob's CLASSPATH is set (at login time) to: /usr/lib:/home/bob/classes:/opt/java/lib:/opt/java/lib/*.jar What is a possible location for the Chess.class file?

A

\/test\/Chess.class

B

\/home\/bob\/Chess.class

C

\/test\/games\/Chess.class

D

\/user\/lib\/games\/Chess.class

What is the Message is displayed in the applet made by the following Java program?

import java.awt.*;import java.applet.*;public class myapplet extends Applet{ public void paint(Graphics g) { g.drawString("A Simple Applet", 20, 20); }}

A

A Simple Applet

B

A Simple Applet 20 20

C

Compilation Error

D

Runtime Error

What is the length of the application box made by the following Java program?

import java.awt.*;import java.applet.*;public class myapplet extends Applet{ public void paint(Graphics g) { g.drawString("A Simple Applet", 20, 20); }}

A

20

B

50

C

100

D

System dependent

What is the length of the application box made the following Java program?

import java.awt.*;import java.applet.*;public class myapplet extends Applet{ Graphic g; g.drawString("A Simple Applet", 20, 20); }

A

20

B

Default value

C

Compilation Error

D

Runtime Error

What is the length of the application box made in the following Java program?

import java.awt.*;import java.applet.*;public class myapplet extends Applet { Graphic g; g.drawString("A Simple Applet",20,20); }

A

20

B

Default value

C

Compilation Error

D

Runtime Error

What is the length of the application box made in the following Java program?

import java.awt.*;import java.applet.*;public class myapplet extends Applet{ Graphic g; g.drawString("A Simple Applet",20,20); }

A

20

B

Default value

C

Compilation Error

D

Runtime Error

What will be the output of the following Java program? class test {public static void main (String args [ ]) { System.out.println(20 + 30 + "Java"); System.out.println("Java" + 20 + 30); } }

A

50 Java

Java 20 30

B

20 30 Java

Java 50

C

2030Java

Java50

D

50Java

Java2030

Consider the following code snippet var f = new java.io.File("/tmp/test"); var out = new java.io.FileWriter(f); out instanceof java.io.Reader What will be the output for the above code snippet?

A

Error

B

True

C

Exception

D

False

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