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Which of the following option leads to the PORTABILITY and security of Java?
Choose the correct option from below list
(1)Bytecode is EXECUTED by JVM
(2)The applet makes the Java code SECURE and portable
(3)Use of EXCEPTION handling
(4)Dynamic binding between objects

Answer:-(1)Bytecode is executed by JVM

Native protocol pure Java CONVERTS _________ into the _________ USED by DBMSs directly.
Choose the correct option from below list
(1)JDBC calls, NETWORK protocol
(2)ODBC class, network protocol
(3)ODBC class, user call
(4)JDBC calls, user call

Answer:-(1)JDBC calls, network protocol

Which is the root CLASS of all AWT events
Choose the correct OPTION from below list
(1)java.awt.ActionEvent
(2)java.awt.AWTEvent
(3)java.awt.event.AWTEvent
(4)java.awt.event.Event

Answer:-(2)java.awt.AWTEvent

Which ONE of the FOLLOWING is true for Java
Choose the CORRECT option from below list
(1)Java is object-oriented and interpreted
(2)Java is efficient and faster than C
(3)Java is the CHOICE of everyone.
(4)Java is not robust.

Answer:-(1)Java is object-oriented and interpreted

_________ is used to find and fix bugs in the Java programs
Choose the correct OPTION from below list
(1)JVM
(2)JDK
(3)JDB
(4)JRE

Answer:-(3)JDB

All JAVA CLASSES are DERIVED from
Choose the correct option from below LIST
(1)java.lang.Class
(2)java.util.Name
(3)java.lang.Object
(4)java.awt.Window

Answer:-(3)java.lang.Object

The u0021 article REFERRED to as a
Choose the correct options from below list
(1)Unicode escape sequence
(2)OCTAL escape
(3)Hexadecimal
(4)Line feed

Answer:-(1)Unicode escape sequence
Note:-Backslash " " is ASCII character 92 and "u" is ASCII 117. And a FOUR hexadeciaml DIGITS

Java SERVLETS are an efficient and powerful SOLUTION for creating _________ for the web.
Choose the CORRECT option from below list
(1)Dynamic content
(2)Static content
(3)Hardware
(4)Both a and b

Answer:-(1)Dynamic content

_____ is used to find and fix bugs in the JAVA programs.
Choose the correct OPTIONS from below list
(1)JVM
(2)JRE
(3)JDK
(4)JDB

Answer:-(4)JDB
Notes:-Java Debugger (JDB or jdb) is a command LINE java debugger that DEBUGS the java class

The command javac is used to
Choose the correct option from below LIST
(1)DEBUG a JAVA program
(2)compile a java program
(3)interpret a java program
(4)EXECUTE a java program

Answer:-(2)compile a java program

Which method will a web browser call on a new applet?
Choose the correct OPTION from below list
(1)MAIN method
(2)destroy method
(3)execute method
(4)init method

Answer:-(4)init method

For the execution of DELETE SQL query in JDBC, _______ method must be used.
Choose the correct option from below LIST
(1)EXECUTEQUERY()
(2)executeDeleteQuery()
(3)EXECUTEUPDATE()
(4)executeDelete()

Answer:-(3)executeUpdate()

Which of the FOLLOWING is not mandatory in a variable declaration?
Choose the correct option from below list
(1)a semicolon
(2)an identifier
(3)an assignment
(4)a DATA type

Answer:-(3)an assignment

An expression involving byte, int, and literal numbers is promoted to which of these?
CHOOSE the CORRECT options from below LIST
(1)int
(2)LONG
(3)byte
(4)float

Answer:-(1)int

Explain which of the FOLLOWING option leads to the PORTABILITY and security of Java?
Choose the correct option from below LIST
(1)Bytecode is executed by JVM
(2)The applet makes the Java code secure and portable
(3)Use of exception HANDLING
(4)Dynamic binding between objects

Answer:-(1)Bytecode is executed by JVM

Java PROGRAMS are
Choose the CORRECT OPTION from below list
(1)Faster than others
(2)Platform independent
(3)Not reusable
(4)Not scalable

Answer:-(2)Platform independent

What is the return type of the hashCode() method in the Object CLASS?
CHOOSE the correct options from below list
(1)Object
(2)int
(3)long
(4)void

Answer:-(2)int
Note:- Return type of hashCode() method is an INTEGER

Can you define range of short DATA type in Java?
Choose the CORRECT OPTIONS from below list
(1)-128 to 127
(2)-32768 to 32767
(3)-2147483648 to 2147483647
(4)None of the mentioned

Answer:-(2)-32768 to 32767

Prepared Statement object in JDBC used to execute _______ queries.
Choose the correct option from below LIST
(1)EXECUTABLE
(2)SIMPLE
(3)HIGH level
(4)Parameterized

Answer:-(4)Parameterized

What would happen if String[]ARGS is not included as an argument in the main method?
Choose the CORRECT option from below LIST
(1)No error
(2)Compilation error
(3)Program wonot RUN
(4)Program exit

Answer:-(3)Program wonot run

Which method of the Class is used to DETERMINE the name of a class REPRESENTED by the class object as a String?
Choose the correct options from below LIST
(1)getClass()
(2)intern()
(3)getName()
(4)toString()

ANSWER:-(3)getName()

Which of the FOLLOWING creates a List of 3 visible ITEMS and multiple selections ABLED?
Choose the CORRECT options from below list
(1)new List(false, 3)
(2)new List(3, true)
(3)new List(true, 3)
(4)new List(3, false)

Answer:-(2)new List(3, true)

Select tool is used to GENERATE API documentation in HTML format from doc comments in source code?
CHOOSE the CORRECT options from below list
(1)javap tool
(2)javah command
(3)javaw command
(4)Javadoc tool

Answer:-(4)Javadoc tool
Note:-Javadoc is a tool that is used to generate API documentation in HTML format from the Java source files.

select option leads to the portability and SECURITY of Java?
CHOOSE the correct options from below list
(1)Bytecode is executed by JVM
(2)The applet makes the Java code secure and portable
(3)Use of exception handling
(4)Dynamic BINDING between objects

Answer:-(1)Bytecode is executed by JVM

Which package CONTAINS the Random CLASS?
Choose the correct OPTIONS from below list
(1)java.io package
(2)java.lang package
(3)java.awt package
(4)java.util package

Answer:-(4)java.util package

Which of the following is not a Java FEATURES?
Choose the correct options from below list
(1)Dynamic
(2)ARCHITECTURE Neutral
(3)USE of pointers
(4)Object-oriented

Answer:-(3)Use of pointers