Which method is used to perform DML statements in JDBC
1.executeUpdate()
2.executeQuery()
3.execute()
4.None of above
Posted Date:-2021-10-25 05:10:46
After the compilation of the java source code, which file is created by the JVM
1..class
2..doc
3..java
4..cdr
Posted Date:-2021-10-25 05:10:46
All collection classes are available in
1.java.util package
2.java.io package
3.java.lang package
4.java.awt package
Posted Date:-2021-10-25 05:10:46
All raw data types should be read and uploaded to the database as an array of
1.int
2.byte
3.char
4.bollean
Posted Date:-2021-10-25 05:10:46
Automatic type conversion in Java takes place when
1.Two type are compatible and size of destination type is equal of source type.
2.Two type are compatible and size of destination type is larger than source type.
3.Two type are compatible and size of destination type is shorter than source type.
4.All of the above
Posted Date:-2021-10-25 05:10:46
Converting a primitive type data into its corresponding wrapper class object instance is called
1.boxing
2.wrapping
3.autoboxing
4.instantiation
Posted Date:-2021-10-25 05:10:46
Execution of the program is always begins with
1.Main method
2.parent class
3.default package
4.class contain main method
Posted Date:-2021-10-25 05:10:46
How many primitive data types are there in Java?
1.5
2.6
3.7
4.8
Posted Date:-2021-10-25 05:10:46
If method have same name as class name and method don't have any return type then it is known as
1.Constructor
2.Destructors
3.Variable
4.Object
Posted Date:-2021-10-25 05:10:46
In Java byte, short, int and long all of these are
1.signed
2.unsigned
3.Both of the above
4.None of these
Posted Date:-2021-10-25 05:10:46
In java, gc() method is available in which package
1.java.io package
2.java.lang package
3.java.awt package
4.java.util package
Posted Date:-2021-10-25 05:10:46
Inheritance means
1.Sub class create object of super class
2.Sub class extends Base class
3.Sub class extends super class
4.All of the above
Posted Date:-2021-10-25 05:10:46
�In Java, the word true is ................
1.A Boolean literal
2.A Java keyword
3.Same as value 0
4.Same as value 1
Posted Date:-2021-10-25 05:10:46
�What is the output for the below code ? public class Test{public static void main(String[] args){int i = 010; int j = 07;System.out.println(i); System.out.println(j); } }1.7 8
2.8 7
3.9 8
4.None
Posted Date:-2021-10-25 05:10:46
�What will be output of following program? public class Test{public static void main(String[] args){byte b=127; b++; b++; System.out.println(b); } }1.127
2.-127
3.129
4.-129
Posted Date:-2021-10-25 05:10:46
�Which class cannot be subclassed (or extended) in java?
1.Final class
2.abstract class
3.parent class
4.None of above
Posted Date:-2021-10-25 05:10:46
JAR file contains the compressed version of
1..java file
2..jsp file
3..class file
4.None of above
Posted Date:-2021-10-25 05:10:46
Java is a ........... language.
1.moderate typed
2.strogly typed
3.weakly typed
4.none of these
Posted Date:-2021-10-25 05:10:46
JIT meaning
1.just in time
2.java in time
3.join in time
4.none of above
Posted Date:-2021-10-25 05:10:46
Methods that have same name, but different Parameter list and different definition known as
1.Overriding
2.Overloading
3.Constructor
4.none of these
Posted Date:-2021-10-25 05:10:46
Minimum threads in a program are
1.0
2.1
3.2
4.3
Posted Date:-2021-10-25 05:10:46
Object which can store group of other objects is called
1.Package
2.Wrapper
3.Java object
4.Collection object
Posted Date:-2021-10-25 05:10:46
Package of drawstring() method is
1.java.awt
2.javax.swing
3.java.applet
4.java.io
Posted Date:-2021-10-25 05:10:46
pow () is associated with which class
1.Input stream class
2.Object class
3.Math class
4.None of above
Posted Date:-2021-10-25 05:10:46
Process of creating exact copy of the existing object is called
1.overloading
2.overriding
3.cloning
4.coping
Posted Date:-2021-10-25 05:10:46
Program which executes applet is known as
1.JVM
2.virtual machine
3.applet engine
4.None of above
Posted Date:-2021-10-25 05:10:46
Runnable is
1.Interface
2.Class
3.Variable
4.Method
Posted Date:-2021-10-25 05:10:46
Size of float and double in Java is
1.32 and 64
2.64 and 64
3.32 and 32
4.64 and 32
Posted Date:-2021-10-25 05:10:46
Size of int in Java is
1.8 bit
2.16 bit
3.32 bit
4.64 bit
Posted Date:-2021-10-25 05:10:46
String is the predefined
1.Object
2.Variable
3.Class
4.Method
Posted Date:-2021-10-25 05:10:46
Super is the predefined
1.Method
2.Keyword
3.Keyword and Method
4.None of above
Posted Date:-2021-10-25 05:10:46
Suspend thread can be revived by using
1.yield() method
2.Suspend() method
3.start() method
4.resume() method
Posted Date:-2021-10-25 05:10:46
The class java.sql.Timestamp is associated with
1.java.util.Date
2.java.util.Time
3.java.sql.Time
4.None of above
Posted Date:-2021-10-25 05:10:46
The following fraction of code double STATIC = 2.5 ; System.out.println( STATIC );
1.Prints 2.5
2.Raises an exception
3.Raises an error as STATIC is used as a variable which is a keyword
4.None of these
Posted Date:-2021-10-25 05:10:46
The following program: public class Test{ static boolean is OK; public static void main(String args[]){System.out.print(is OK); } }1.Prints true
2.Prints false
3.Will not compile as boolean is not initialized
4.Will not compile as boolean can never be static
Posted Date:-2021-10-25 05:10:46
The JDBC-ODBC bridge is
1.Singlethreaded
2.Multithreaded
3.Both of above
4.None of above
Posted Date:-2021-10-25 05:10:46
The smallest integer type is ......... and its size is ......... bits.
1.short, 8
2.byte, 8
3.short, 16
4.short, 16
Posted Date:-2021-10-25 05:10:46
Thread class is available in
1.java.lang package
2.java.util package
3.java.awt package
4.java.io package
Posted Date:-2021-10-25 05:10:46
What will the output of the following program? public class Test{ public static void main(String args[]){float f = (1 / 4) * 10; int i = Math.round(f); System.out.println(i); } }1.0
2.1
3.2
4.3
Posted Date:-2021-10-25 05:10:46
Which collection class associates values witch keys, and orders the keys according to their natural order
1.java.util.LinkedList
2.java.util.TreeMap
3.java.util.SortedSet
4.java.util.HashSet
Posted Date:-2021-10-25 05:10:46
Which method executes only once
1.stop() method
2.start() method
3.init() method
4.destroy() method
Posted Date:-2021-10-25 05:10:46
Which metrhods are utilized to control the access to an object in multi threaded programming
1.Synchronized methods
2.Asynchronized methods
3.Serialized methods
4.None of above
Posted Date:-2021-10-25 05:10:46
Which of the following automatic type conversion will be possible?
1.byte to int
2.short to int
3.long to int
4.int to long
Posted Date:-2021-10-25 05:10:46
Which of the following below are valid isolation levels in J2EE
1.TRANSACTION_READ_UNCOMMITTED
2.TRANSACTION_SERIALIZABLE
3.Only A
4.Both A and B
Posted Date:-2021-10-25 05:10:46
Which of the following statements about arrays is syntactically wrong
1.arrayName[] p = new arrayName[5];
2.arrayName p[][] = new arrayName[2][];
3.arrayName[] p [];
4.arrayName p[5];
Posted Date:-2021-10-25 05:10:46
Which statement is static and synchronized in JDBC API
1.getConnection()
2.executeQuery()
3.prepareCall()
4.executeUpdate()
Posted Date:-2021-10-25 05:10:46
Which type of inheritance is not supported by java
1.Single
2.Mulilevel
3.Hirarchical
4.Multiple
Posted Date:-2021-10-25 05:10:46
Why we use array as a parameter of main method
1.Can store multiple values
2.It is syntax
3.Both of above
4.None of above
Posted Date:-2021-10-25 05:10:46
x=x+1 is equivalent to
1.x++
2.++x
3.x=x-1
4.None of these
Posted Date:-2021-10-25 05:10:46