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Java.io Package Java technologies Quiz

Java.io Package Java technologies Quiz

The DataOutput interface provides for converting data from any of the Java ... Serializability of a class is enabled by the class implementing the java.io. .... in any class or interface in this package will cause a NullPointerException to be thrown. Java.io, provides a set of input streams and a set of output streams used to read and write data to files or other input and output sources.

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Quiz Questions And Answers

What is the default value of the data type boolean in Java ?

0
1
true
false

If a = -5, then +a means

-5
5
0
none of the above

If a = -5, then -a means

5
-5
0
none of the above

What is the value of the expression 9/9 ?

0
1
10
none of the above

What is the value of the expression 10%9 ?

19
1
9
0

Which of these literals can be contained in a data type float variable ?

1.7e-308
3.4e-038
1.7e+308
3.4e-050

Which data type value is returned by all transcendental math functions ?

int
float
double
long

Which of the following coding types is used for the data type characters in Java ?

ISO-LATIN-1
UNICODE
ASCII
none of the above

Which of the following values, a boolean variable can contain ?

True and False
Any integer value
0 and 1
none of the above

Which of the following is a correct declaration of variable in Java ?

int num
int-num
int num;
int-num;

Which of the following is a correct variable initialization in Java ?

int num = 10
int-num = 10
int num = 10;
int-num = 10;

What is the default value of the data type byte in Java ?

0
null
1
none of the above

What is the default value of the data type int in Java ?

1
0
0i
none of the above

What is the default value of the data type long in Java ?

0
1
0L
10

What is the default value of the data type double in Java ?

0
1
0.0D
0.0
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