
java
Authored by karthik kumar
Education
University - Professional Development
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
which of the following is wrapper class in java
Float
Integer
Double
all of above
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
which one of the following is true?
runnable interface declares the start method
Thread.start() method is used to move a thread from a new state to the runnable state
Thread.runnable() method is used to move a thread from new state to the runnable state
Thread.run() method is used to move a thread from new state to the runnable state
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of the following statement is not true about the collection interface?
all methods defined in set interface are also defined in collection interface
list interface extends collection interface
set interface extends collection interface
all methods defined in list interface are also defined in collection interface
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
which one of the following is a legal decelration of a two- dimensional array of integers
int[] a[] = new int[5][];
int[5][5] a = new int[][];
int a = new int[5,5];
int[][] a = new int[][5];
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
which interface needs to be implemented in order to make an object seralized
clonnable
remote
seralizable
none of the above
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
superclass of all classes representing the output stream of characters is -------------
OutputStream
Reader
InputStream
Writer
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
which of this class is used by character streams for reading data from buffer
BufferReader
InputStreamReader
FileReader
FileInputStream
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