Why did you write java.util package? (only if you use classes like Scanner or StringTokenizer)

Why did you write java.util package? (only if you use classes like Scanner or StringTokenizer)
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1 Answer

Answer :

A: To include the functions of the Scanner or StringTokenizer class from the java.util package.
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Related questions

What is StringTokenizer or Scanner and examples of similar classes (if you used it)

Description : What is StringTokenizer or Scanner and examples of similar classes (if you used it)

Last Answer : A: StringTokenizer or Scanner is a class which splits up any given string into tokens separated by delimiters.

All java classes are derived from A) java.lang.Class B) java.util.Name C) java.lang.Object D) java.awt.Window

Description : All java classes are derived from A) java.lang.Class B) java.util.Name C) java.lang.Object D) java.awt.Window

Last Answer : D) java.awt.Window

Name some other concepts related to Scanner/StringTokenizer

Description : Name some other concepts related to Scanner/StringTokenizer

Last Answer : A: Scanner class, StringTokenizer class, split() function.

Name some function of StringTokenizer class.

Description : Name some function of StringTokenizer class.

Last Answer : A: nextToken(), countToken(), hasMoreTokens() etc.

java.util.MissingResourceException: Can't find bundle for base name -Web-Development

Description : java.util.MissingResourceException: Can't find bundle for base name -Web-Development

Last Answer : answer:

Which interface does java.util.Hashtable implement?

Description : Which interface does java.util.Hashtable implement?

Last Answer : Ans. Java.util.Map

............... package is used by compiler itself. So it does not need to be imported for use. A) java.math B) java.awt C) java.applet D) java.lang

Description : ............... package is used by compiler itself. So it does not need to be imported for use. A) java.math B) java.awt C) java.applet D) java.lang

Last Answer : D) java.lang

What is the default java package?

Description : What is the default java package?

Last Answer : A: java.lang

The class string belongs to ................... package. A) java.awt B) java.lang C) java.applet D) java.string

Description : The class string belongs to ................... package. A) java.awt B) java.lang C) java.applet D) java.string

Last Answer : B) java.lang

Which of the following statement(s) with regard to an abstract class in JAVA is/are TRUE? I. An abstract class is one that is not used to create objects. II. An abstract class is designed only to act as a base class to be inherited by other classes. (1) Only l (2) Only II (3) Neither I nor II (4) Both l and II

Description : Which of the following statement(s) with regard to an abstract class in JAVA is/are TRUE? I. An abstract class is one that is not used to create objects. II. An abstract class is designed only to act as a base class ... by other classes. (1) Only l (2) Only II (3) Neither I nor II (4) Both l and II

Last Answer : Both l and II

The concept of multiple inheritance is implemented in Java by A) extending two or more classes B) extending one class and implementing one or more interfaces C) implementing two or more interfaces D) both B and C

Description : The concept of multiple inheritance is implemented in Java by A) extending two or more classes B) extending one class and implementing one or more interfaces C) implementing two or more interfaces D) both B and C

Last Answer : D) both B and C

The concept of multiple inheritance is implemented in Java by A) extending two or more classes B) extending one class and implementing one or more interfaces C) implementing two or more interfaces D) both B and C

Description : The concept of multiple inheritance is implemented in Java by A) extending two or more classes B) extending one class and implementing one or more interfaces C) implementing two or more interfaces D) both B and C

Last Answer : D) both B and C

State true or false. i) init() is called after start() in applet ii) applets are used for networking iii) inheritance is a part of Java Foundation Classes iv) final does not prevent inheritance A) i-true, ii-true, iii-false, iv-true B) i-false, ii-false, iii-false, iv-false C) i-true, ii-true, iii-true, iv-true D) i-true, ii-false, iii-false, iv-false

Description : State true or false. i) init() is called after start() in applet ii) applets are used for networking iii) inheritance is a part of Java Foundation Classes iv) final does not prevent inheritance A) i-true, ii- ... C) i-true, ii-true, iii-true, iv-true D) i-true, ii-false, iii-false, iv-false

Last Answer : B) i-false, ii-false, iii-false, iv-false

In JDBC ........................ imports all Java classes concerned with database connectivity. A) javax.sql.* B) java.mysql.* C) java.sql.* D) com.*

Description : In JDBC ........................ imports all Java classes concerned with database connectivity. A) javax.sql.* B) java.mysql.* C) java.sql.* D) com.*

Last Answer : C) java.sql.*

State true or false. i) Jpanel is a class included in awt package. ii) Anonymous classes are mostly used for event handling. iii) Names of anonymous classes must be unique iv) JOptionPane is an inner class A) i-false, ii-false, iii-true, iv-true B) i-true, ii-false, iii-true, iv-false C) i-false, ii-true, iii-false, iv-false D) i-true, ii-false, iii-false, iv-true

Description : State true or false. i) Jpanel is a class included in awt package. ii) Anonymous classes are mostly used for event handling. iii) Names of anonymous classes must be unique iv) JOptionPane is an inner class A) i-false ... ) i-false, ii-true, iii-false, iv-false D) i-true, ii-false, iii-false, iv-true

Last Answer : C) i-false, ii-true, iii-false, iv-false

A package is a collection of A) classes B) interfaces C) editing tools D) classes and interfaces

Description : A package is a collection of A) classes B) interfaces C) editing tools D) classes and interfaces

Last Answer : D) classes and interfaces

A package is a collection of A) classes B) interfaces C) editing tools D) classes and interfaces

Description : A package is a collection of A) classes B) interfaces C) editing tools D) classes and interfaces

Last Answer : D) classes and interfaces

A ____ is a namespace for organizing classes and interfaces in a logical manner. Placing your code into ______makes large software projects easier to manage. This section explains why this is useful and introduces you to the Application Programming Interface (API) provided by the Java Platform: a) Inheritance b) Object c) Package d) None of These

Description : A ____ is a namespace for organizing classes and interfaces in a logical manner. Placing your code into ______makes large software projects easier to manage. This section explains why this is useful and ... provided by the Java Platform: a) Inheritance b) Object c) Package d) None of These

Last Answer : c) Package

Name some function of Scanner class.

Description : Name some function of Scanner class.

Last Answer : A: next(), nextInt(), hasNextInt() etc.

In java, ............. can only test for equality, where as ............ can evaluate any type of the Boolean expression. A) switch, if B) if, switch C) if, break D) continue, if

Description : In java, ............. can only test for equality, where as ............ can evaluate any type of the Boolean expression. A) switch, if B) if, switch C) if, break D) continue, if

Last Answer : A) switch, if

Java Servlet i) is key component of server side java development ii) is a small pluggable extension to a server that enhances functionality iii) runs only in Windows Operating System iv) allows developers to customize any java enabled server A) i, ii & iii are ture B) i, iii & iv are true C) ii, iii & iv are true D) i, ii & iv are true

Description : Java Servlet i) is key component of server side java development ii) is a small pluggable extension to a server that enhances functionality iii) runs only in Windows Operating System iv) allows developers to customize any java ... & iv are true C) ii, iii & iv are true D) i, ii & iv are true

Last Answer : D) i, ii & iv are true

State true or false. i) Unix, support multiple user process but only support one thread per process. ii) A java run time environment is an example of a system of one process with multiple threads. A) True, False B) True, True C) False, True D) False, False

Description : State true or false. i) Unix, support multiple user process but only support one thread per process. ii) A java run time environment is an example of a system of one process with multiple threads. A) True, False B) True, True C) False, True D) False, False

Last Answer : B) True, True

Javascript and Java has similar name because ........... is/are true. (a) Javascripts syntax is loosely based on Java’s syntax (b) Javascript is stripped down version of Java (c) Java and Javascript are originated from Island of Java Codes : (A) (a) only (B) (a), (b) and (c) (C) (a) and (b) (D) (a) and (c)

Description : Javascript and Java has similar name because ........... is/are true. (a) Javascripts syntax is loosely based on Java's syntax (b) Javascript is stripped down version of Java (c) Java and Javascript are originated from Island of Java ... only (B) (a), (b) and (c) (C) (a) and (b) (D) (a) and (c)

Last Answer : Answer: A

State true of false. i) Public can only be assigned to class ii) Protected protects a statement iii) Protected method is never accessible outside the package iv) Friendly variable may be accessible outside class A) i-true, ii-true, iii-false, iv-true B) i-true, ii-false, iii-true, iv-false C) i-false, ii-true, iii-false, iv-false D) i-true, ii-false, iii-false, iv-true

Description : State true of false. i) Public can only be assigned to class ii) Protected protects a statement iii) Protected method is never accessible outside the package iv) Friendly variable may be accessible outside class A) i- ... -false, ii-true, iii-false, iv-false D) i-true, ii-false, iii-false, iv-true

Last Answer : C) i-false, ii-true, iii-false, iv-false

Match the following. a) Java 1) is a tool for debugging java program b) Javah 2) is a tool for creating C-like header files c) Javap 3) runs java bytecode d) jdb 4) prints java code representation A) a-3, b-2,c-1 B) a-3, b-1, c-4, d-2 C) a-1, b-2, c-3, d-4 D) a-2, b-1, c-3, d-4

Description : Match the following. a) Java 1) is a tool for debugging java program b) Javah 2) is a tool for creating C-like header files c) Javap 3) runs java bytecode d) jdb 4) prints java code representation A) a-3, b-2,c-1 B) a-3, b-1, c-4, d-2 C) a-1, b-2, c-3, d-4 D) a-2, b-1, c-3, d-4

Last Answer : B) a-3, b-1, c-4, d-2

Data input is A) an abstract class defined in java.io B) a class we can use to read primitive data types C) an interface that defines methods to open files. D) an interface that defines methods to read primitive data types.

Description : Data input is A) an abstract class defined in java.io B) a class we can use to read primitive data types C) an interface that defines methods to open files. D) an interface that defines methods to read primitive data types.

Last Answer : D) an interface that defines methods to read primitive data types.

Data input is A) an abstract class defined in java.io B) a class we can use to read primitive data types C) an interface that defines methods to open files. D) an interface that defines methods to read primitive data types.

Description : Data input is A) an abstract class defined in java.io B) a class we can use to read primitive data types C) an interface that defines methods to open files. D) an interface that defines methods to read primitive data types.

Last Answer : D) an interface that defines methods to read primitive data types.

A software company needs to develop a project that is estimated as 1000 function points and is planning to use JAVA as the programming language whose approximate lines of code per function point is accepted as 50. Considering a=1.4 as multiplicative factor, b=1.0 as exponention factor for the basic COCOMO effort equation and c=3.0 as multiplicative factor, d=0.33 as exponention factor for the basic COCOMO duration equation, approximately how long does the project take to complete? (1) 11.2 months (2) 12.2 months (3) 13.2 months (4) 10.2 months

Description : A software company needs to develop a project that is estimated as 1000 function points and is planning to use JAVA as the programming language whose approximate lines of code per function point is accepted as 50. Considering a=1. ... ? (1) 11.2 months (2) 12.2 months (3) 13.2 months (4) 10.2 months

Last Answer : Generally, any projects are measured in weeks. However, the complex project might take more time depending on the level of object re-use available.

Name the primitive data-types in java.

Description : Name the primitive data-types in java.

Last Answer : A: byte, short, int, long, float, double, char and boolean

Mention other ways in which java handles exceptions.

Description : Mention other ways in which java handles exceptions.

Last Answer : A: Java can handle exception using the try-catch block, throws keyword and throw keyword.

What is significance of import java.io.* in your program?

Description : What is significance of import java.io.* in your program?

Last Answer : A: The line imports all the classes of the java.io package into the current program.

What is Inheritance? How is it implemented in Java?

Description : What is Inheritance? How is it implemented in Java?

Last Answer : A: The ability of a class to adopt/share the properties (data and functions) completely or partially from another class is called Inheritance. In Java, it is implemented by the use of the keyword, extends.

What is Polymorphism? How is it implemented in Java?

Description : What is Polymorphism? How is it implemented in Java?

Last Answer : A: It literally means the ability to take ‘more than one forms’. The ability of a method to behave in more than one form is called polymorphism. In Java, it is implemented by method (function) overloading (compile time polymorphism) and method overriding (runtime polymorphism).

What is Data Abstraction? How is it implemented in Java?

Description : What is Data Abstraction? How is it implemented in Java?

Last Answer : A: Act of representing only essential features without including its background details is called Abstraction. Data Abstraction can also be defined as the process of hiding the implementation details and showing ... Java, it is implemented by the use of interfaces or by making the class abstract.

What is Encapsulation? How is it implemented in Java?

Description : What is Encapsulation? How is it implemented in Java?

Last Answer : A: Binding up of data and associated functions together into a single unit called (class) is called Encapsulation. In Java, it is implemented by the use of a class.

Is Java an Object Oriented language?

Description : Is Java an Object Oriented language?

Last Answer : A: Yes.

State true or false. i) comparisons precede logical operations in java ii) assignment operations succeed increment operations iii) arithmetic operations succeed comparisons iv) x precede + A) i-true, ii-true, iii-false, iv-true B) i-true, ii-false, iii-true, iv-false C) i-false, ii-true, iii-false, iv-false D) i-true, ii-false, iii-false, iv-true

Description : State true or false. i) comparisons precede logical operations in java ii) assignment operations succeed increment operations iii) arithmetic operations succeed comparisons iv) x precede + A) i-true, ii-true, iii-false, ... false, ii-true, iii-false, iv-false D) i-true, ii-false, iii-false, iv-true

Last Answer : A) i-true, ii-true, iii-false, iv-true

Each method in a java class must have a unique name . A) Not necessary B) True C) False D) None of the above

Description : Each method in a java class must have a unique name . A) Not necessary B) True C) False D) None of the above

Last Answer : A) Not necessary

In java, string is a ............. A) primitive data type B) abstract data type C) combination of boolean D) None of the above

Description : In java, string is a ............. A) primitive data type B) abstract data type C) combination of boolean D) None of the above

Last Answer : B) abstract data type

State true or false for the following statements in Java. i) Java beans slow down software development process. ii) Java Servlets do not have built in multithreading feature. A) i-false, ii-false B) i-false, ii-true C) i-true, ii-false D) i-true, ii-true

Description : State true or false for the following statements in Java. i) Java beans slow down software development process. ii) Java Servlets do not have built in multithreading feature. A) i-false, ii-false B) i-false, ii-true C) i-true, ii-false D) i-true, ii-true

Last Answer : A) i-false, ii-false

JSP embeds in ................ in ...................... A) Servlet, HTML B) HTML, Java C) HTML, Servlet D) Java, HTML

Description : JSP embeds in ................ in ...................... A) Servlet, HTML B) HTML, Java C) HTML, Servlet D) Java, HTML

Last Answer : D) Java, HTML

State true or false for Java Program. i) Data members of an interface are by default final ii) An abstract class has implementations of all methods defined inside it. A) i-false, ii-false B) i-false, ii-true C) i-true, ii-false D) i-true, ii-true

Description : State true or false for Java Program. i) Data members of an interface are by default final ii) An abstract class has implementations of all methods defined inside it. A) i-false, ii-false B) i-false, ii-true C) i-true, ii-false D) i-true, ii-true

Last Answer : C) i-true, ii-false

State true or false for Java Program. i) All class variables are instance variables ii) All protected methods are friendly methods A) i-false, ii-false B) i-false, ii-true

Description : State true or false for Java Program. i) All class variables are instance variables ii) All protected methods are friendly methods A) i-false, ii-false B) i-false, ii-true

Last Answer : B) i-false, ii-true

In Java servlet method init( ) is called ..................... times. A) 1 B) 2 C) 0 D) multiple

Description : In Java servlet method init( ) is called ..................... times. A) 1 B) 2 C) 0 D) multiple

Last Answer : A) 1

The compiled java program can run on any ..................... plateform having Java Virtual Machine (JVM) installed on it. A) program B) java C) hardware D) non java

Description : The compiled java program can run on any ..................... plateform having Java Virtual Machine (JVM) installed on it. A) program B) java C) hardware D) non java

Last Answer : C) hardware

In the second type the information written in java after // is ignored by the ....................... A) Interpreter B) Compiler C) Programmer D) All of the above

Description : In the second type the information written in java after // is ignored by the ....................... A) Interpreter B) Compiler C) Programmer D) All of the above

Last Answer : B) Compiler

The third type of comment is used by a tool called .................. for automatic generation of documentation. A) Java commenting B) Java generator C) Java doc D) Java loc

Description : The third type of comment is used by a tool called .................. for automatic generation of documentation. A) Java commenting B) Java generator C) Java doc D) Java loc

Last Answer : C) Java doc

System.in.read() is being used, the program must specify the .................. clause. A) throws.java.out.IOException B) throws.java.in.IOException C) throws.java.io.IOException D) throws.java.io.InException

Description : System.in.read() is being used, the program must specify the .................. clause. A) throws.java.out.IOException B) throws.java.in.IOException C) throws.java.io.IOException D) throws.java.io.InException

Last Answer : C) throws.java.io.IOException

In Java variables, if first increment of the variable takes place and then the assignment occurs. This operation is also called ............................. . A) pre increment B) post increment C) incrementation D) pre incrementation

Description : In Java variables, if first increment of the variable takes place and then the assignment occurs. This operation is also called ............................. . A) pre increment B) post increment C) incrementation D) pre incrementation

Last Answer : A) pre increment