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Question 6 .
What output is produced by the program shown in Listing 4 ?
- A. Compiler Error
- B. Runtime Error
- C. true
- D. false
| Listing 4 . Question 6. |
|---|
public class Ap005{
public static void main(String args[]){new Worker().printBoolean();
}//end main()}//end class definition
class Worker{public void printBoolean(){
boolean myVar;System.out.println(myVar);
}//end printBoolean()}//end class definition |
Question 7 .
What output is produced by the program shown in Listing 5 ?
- A. Compiler Error
- B. Runtime Error
- C. true
- D. false
| Listing 5 . Question 7. |
|---|
public class Ap006{
public static void main(String args[]){new Worker().printBoolean();
}//end main()}//end class definition
class Worker{public void printBoolean(){
boolean myVar = true;myVar = false;
System.out.println(myVar);}//end printBoolean()
}//end class definition |
Question 8 .
The plus (+) character can be used to perform numeric addition in Java. What output is produced by the program shown in Listing 6 ?
- A. Compiler Error
- B. Runtime Error
- C. true
- D. 2
- E. 1
| Listing 6 . Question 8. |
|---|
public class Ap007{
public static void main(String args[]){new Worker().printBoolean();
}//end main()}//end class definition
class Worker{public void printBoolean(){
boolean myVar = true;System.out.println(1 + myVar);
}//end printBoolean()}//end class definition |
Question 9 .
The plus (+) character can be used to perform numeric addition in Java. What output is produced by the program shown in Listing 7 ?
- A. Compiler Error
- B. Runtime Error
- C. 6
- D. 6.0
| Listing 7 . Question 9. |
|---|
public class Ap008{
public static void main(String args[]){new Worker().printMixed();
}//end main()}//end class definition
class Worker{public void printMixed(){
double x = 3;int y = 3;
System.out.println(x+y);}//end printMixed()
}//end class definition |
Question 10 .
The slash (/) character can be used to perform numeric division in Java. What output is produced by the program shown in Listing 8 ?
- A. Compiler Error
- B. Runtime Error
- C. 0.33333334
- D. 0.3333333333333333
| Listing 8 . Question 10. |
|---|
public class Ap009{
public static void main(String args[]){new Worker().printMixed();
}//end main()}//end class definition
class Worker{public void printMixed(){
System.out.println(1.0/3);}//end printMixed()
}//end class definition |
Programming challenge questions
Question 11
Write the program described in Listing 9 .
| Listing 9 . Question 11. |
|---|
/*File Ap0010a1.java Copyright 2012, R.G.Baldwin
Instructions to student:This program refuses to compile without errors.
Make the necessary corrections to cause the program tocompile and run successfully to produce the output shown
below:ITSE
2321**********************************************************/
public class Ap0010a1{public static void main(String args[]){System.out.println("ITSE");
new Worker().doIt();}//end main()
}//end class definition//=======================================================//
Class Worker{public void doIt(){
System.out.println("2321");}//end doIt()
}//end class definition//=======================================================// |
Read also:
OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
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