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Java Programming
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Course Name
BCA (Bachelor of Computer Application)
Subject Code BC0047 (Java Programming)
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PART - A
PART - B
PART - C
Subject : Java Programming
BC0047 : PART - C
| Q. 1 | The Fruit class declares the following
method to return
a float value calculated from a size of a fruit.
public float calories (float serving)
A junior programmer writing the Apple class,
which extends Fruit, proposes to declare the |
| | A) | It won't compile because of the different
return type |
| B) | It won't compile because of the different
name in the parameter list | | C) | It will compile but will be incompatible with
other use of the method, because you can't cast
the double return type to float | | D) | It will compile and be compatible with other
uses of the calories method | | | | | Q. 2 | 31. Select correct Syntaxes
1. for (initialization; test condition; modifier
expression;)
2. for (initialization1, initialization2;
test conditon1, test condition2;
modifier1, modifier2)
{ body of the loop};
3. while (test cond |
| | A) | 1 |
| B) | 1 and 2 | | C) | 2, 3 | | D) | All the above | | | | | Q. 3 | Trying to compile the following source
code produces a compiler warning to the effect
that the variable 'tmp' may not have been
initialised.
1. class Demo {
2. public static void main (String args[])
3. int n = -10;
4. String t |
| | A) | Make line 4 read, String tmp=null; |
| B) | Make line 4 read String tmp=""; | | C) | Insert a line following line 5, else
tmp="not Positive"; | | D) | All of these changes will eliminate the
warning | | | | | Q. 4 | In the following code for a class in which
'method' has an inner class, which variables
would the statement in
line 8 be unable to use in place of XXX?
public class Base {
static int aaa=3;
Strin bbb = "Java";
public void metho |
| | A) | aaa |
| B) | bbb | | C) | ccc | | D) | ddd | | | | | Q. 5 | You are writing a set of classes related
to Marks Report and have created your own
exception hierarchy derived from
java.lang.Exception as follows:
java.lang.Exception
+-- MarksException
+--OutOfRangeException
Your custom excep |
| | A) | new OutOfRangeException ("Marks is not in
the Range"); |
| B) | throws new OutOfRangeException ("Marks is
not in the Range"); | | C) | throw new OutOfRangeExcep tion ("Marks is
not in the Range"); | | D) | throw OutOfRangeException ("Marks is not
in the Range"); | | | |
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