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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 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. 2 | 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. 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 | Assume that the following program has
been compiled and Radio.class file is in the
current directory.
class Radio {
public static void main(String args[j) {
int n = 0;
System.out.println
("The ray is "+args[++n]);
}
} < |
| | A) | Radio alpha beta gamma |
| B) | java Radio gamma beta | | C) | java Radio alpha gamma | | D) | java Radio.class beta gamma | | | | | Q. 5 | Given the following method that will be
called with various input values:
public void soundOff(int x){
switch(x){
case 1: System.out.print("One”)
case 2: System.out.print(“Two”) break;
case 3: Systern.out.print("Three ");
defau |
| | A) | Input = 0, Output = "Zero" |
| B) | Input = 1, Output = "One" | | C) | Input = 2, Output ~ "One Two" | | D) | Input = 3, Output = "Three Do What?" | | | |
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