Java question 1. name and briefly describe three possible error scenarios that c
ID: 3803385 • Letter: J
Question
Java question
1. name and briefly describe three possible error scenarios that could exist when a program writes , or attempts to write , data to a file.
2.
Rewrite the following if statement, using a switch statement.
selection - scanner.nextlnto:
if (selection - - 0)
System.out.println(“Magenta“):
else if (selection - - 1)
System.out.println(“Cyan“):
else if (selection - - 2)
System.out.println(“Red"):
else
System.out.println(“Invalid selection“)
3.
What will be the value of sum after the following nested loop is executed?
sum = 0;
j = 0;
do {
j++;
for(int i =5; j ; i--);
}
} while (i < 5);
j =5;
while (i !- j)
sum + = j;
j--;
}
i++
}
A) 50
B) 55
C) 60
D) 65
4.
What will be the output from the following code?
class Q2Main {
public static void main( String[] args) {
QuestionTwo q2;
q2 - new QuestionTwo()
q2.init():
q2.incremento();
q2.incremento();
System.out.println( q2.getCounto());
}
}
class QuestionTwo {
private int count:
public void initl () {
count - 1;
}
public void increment(
count - count + 1;
}
public int getCountO
return count;
}
}
A) 1
B) 2
C)3
D) 4
E) 5
5.
What is the problem with the following code?
for (int i = 10; i > 0; i++)
{
int x = 0;
int y = O;
int a = 1;
int b =1;
x = y;
a = b;
}
A)The for loop never gets executed.
B) The program flow forms an endless loop.
C) The i variable is never initialized.
D) No problem exists in the code.
Explanation / Answer
1. name and briefly describe three possible error scenarios that could exist when a program writes , or attempts to write , data to a file.
a) File does not exists
b) File is corrupted
c) Invalid file format
d) Unable to open a file
2) selecttion = scanner.nextInt();
switch(selection){
case 1 :
System.out.println(“Magenta“):
break;
case 2 :
System.out.println(“Cyan“):
break;
case 3 :
System.out.println(“Red“):
break;
default :
System.out.println(“Invalid Selection“):
break;
}
3) Write correct code, Code is Incomplete with lot of sysntax errors [if you could do that I will give u answer in comments]
4) A) 1
5) B) The program flow forms an endless loop.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.