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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 | 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. 2 | The following, method takes a char input
and returns an int value
public int maze(char d)}
if(d<='N'){
if(d=='E') return 2;
return 1;
}
else if(d=='S') return 3;
else if(d=='W') return 4;
return 0;
} |
| | A) | Input of 'A' produces output of I |
| B) | Input of ‘X’ produces output of 0 | | C) | Q Input of 'E' produces output of 2 | | D) | The method fails to compile due to syntax
error | | | | | Q. 3 | 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. 4 | 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"); | | | | | Q. 5 | 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 | | | |
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