Que- Which of these class can be used to implement the input stream that uses a character array as the source?
a. BufferedReader
b. FileReader
c. CharArrayReader
d. FileArrayReader
Answer- CharArrayReader
Que- Which of these classes can return more than one character to be returned to input stream?
a. BufferedReader
b. Bufferedwriter
c. PushbachReader
d. CharArrayReader
Answer- PushbachReader
Que- Which of the following is not a segment of memory in java?
a. Stack Segment
b. Heap Segment
c. Code Segment
d. Register Segment
Answer- Register Segment
Que- Does code Segment loads the java code?
a.TRUE
b.FALSE
c.Nothing Can be Said
d.None of the mentioned
Answer-TRUE
Que- What is JVM?
a. Bootstrap
b. Interpreter
c. Extension
d. Compiler
Answer- Interpreter
Que- Which one of the following is a class loader?
a. Bootstrap
b. Compiler
c. Heap
d. Interpreter
Answer- Bootstrap
Que- Which class loader loads jar files from JDK directory?
a. Bootstrap
b. Extension
c. System
d. Heap
Answer- Extension
Que- Which of the following is not a memory classification in java?
a. Young
b. Old
c. Permanent
d. Temporary
Answer- Temporary
Que- What is the Java 8 update of PermGen?
a. Code Cache
b. Tenured Space
c. Metaspace
d. Eden space
Answer- Metaspace
Que- Classes and Methods are stored in which space?
a. Eden space
b. Survivor space
c. Tenured space
d. Permanent space
Answer- Permanent space
Que- Where is String Pool stored?
a. Java Stack
b. Java Heap
c. Permanent Generation
d. Metaspace
Answer- Java Heap
Que- Which of these exceptions handles the situations when an illegal argument is used to invoke a method?
a. IllegalException
b. Argument Exception
c. IllegalArgumentException
d. IllegalMethodArgumentExcepetion
Answer- IllegalArgumentException
Que- Which of these exceptions will be thrown if we declare an array with negative size?
a. IllegalArrayException
b. IllegalArraySizeExeption
c. NegativeArrayException
d. NegativeArraySizeExeption
Answer- NegativeArraySizeExeption
Que- Which of these packages contain all the Java's built in exceptions?
a. java.io
b. java.util
c. java.lang
d. java.net
Answer- java.lang
Que- Which of these exceptions will be thrown if we use null reference for an arithmetic operation?
a. ArithmeticException
b. NullPointerException
c. IllegalAccessException
d. IllegalOperationException
Answer- NullPointerException
Que- Which of these class is used to create user defined exception?
a. java.lang
b. Exception
c. RunTime
d. System
Answer- Exception
Que- Which of these class provides various types of rounding functions?
a. Math
b. Process
c. System
d. Object
Answer- Math
Que- Which of these methods return a smallest whole number greater than or equal to variable X?
a. double ceil(double X)
b. double floor(double X)
c. double max(double X)
d. double min(double X)
Answer- double ceil(double X)
Que- Which of these method returns a largest whole number less than or equal to variable X?
a. double ceil(double X)
b. double floor(double X)
c. double max(double X)
d. double min(double X)
Answer- double floor(double X)
Que- Which of function return absolute value of a variable?
a. abs()
b. absolute()
c. absolutevariable()
d. none of the mentioned
Answer- abs()
Que- Which of these methods of Byte wrapper can be used to obtain Byte object from a string?
a. toString()
b. getString()
c. decode()
d. encode()
Answer- decode()
Que- Which of the following methods Byte wrapper return the value as a double?
a. doubleValue()
b. converDouble()
c. getDouble()
d. getDoubleValue()
Answer- doubleValue()
Que- Which of these is a super class of wrappers Byte and short wrappers?
a. Long
b. Digits
c. Float
d. Number
Answer- Number
Que- Which of these methods is not defined in both Byte and Short wrappers?
a. intValue()
b. isInfinite()
c. toString()
d. hashCode()
Answer- isInfinite()
Que- Which of these methods of Byte wrapper can be used to obtain Byte object from a string?
a. toString()
b. getString()
c. decode()
d. encode()
Answer- decode()
Que- Which of the following methods Byte wrapper return the value as a double?
a. doubleValue()
b. converDouble()
c. getDouble()
d. getDoubleValue()
Answer- doubleValue()
Que- Which of these is a super class of wrappers Byte and short wrappers?
a. Long
b. Digits
c. Float
d. Number
Answer- Number