Final

Question 1

How to use a try/catch?

Answer 1

try
{

}
catch(exceptionclass objectofexceptionclass)
{

}

Question 2

Resources that have to be closed you can use:

Using this it closes it before exception is passed to handler

Answer 2

Try(PrintWriter outfile = newPrintWriter(“pets.txt”);
{
     outfile.println(“Chloe”);

}

//outfile.close() occurs after

Question 3

__________ block always excecutes

Answer 3

finally

Question 4

If an exception occurs in a finally block is is raised to it:

Answer 4

Handler

Question 5

If clean other then close method is required, use:

Answer 5

Finally block

Question 6

Finally block:

Answer 6

try
{

}
catch
{

}
finally
{
      Cleanup //occurs whether or not exception
                     //occurs
}

Question 7

If there is no input when nextInt or nextDouble is called it was cause what exception?

Answer 7

No such element exception

Question 8

I’m order to avoid NoSuchElementException use:

Answer 8

hasNextInt method

Question 9

How to use hasNextInt() method:

Answer 9

Example:

If(in.hasNextInt())
{
int value = in.nextInt();
}

Question 10

How to convert strings to ints?:

Answer 10

int year = Integers.parseInt(“2018”);

double price = Double.parseDouble(“10.99”);

Question 11

How to use a delimiter?

Answer 11

Scanner in = new Scanner(. . .);
in.useDelimiter(“, “);

Separates at every “, “

Question 12

How to process a file:

Answer 12

while(in.hasNext())
{
     String input = in.next();
     System.out.println(input);
}

Question 13

An array collects collects a sequence of values of the ________ data type

Answer 13

Same

Question 14

General format of array:

Answer 14

Ex:

double[] values = new double[10]

By Default each number is 0.0

Question 15

How can you input data such as 1,2,3,4,5 into an array:

Answer 15

int[] example = { 1, 2, 3, 4, 5};

Question 16

If you have to use array.length do not use:

Answer 16

Parentheses

Question 17

double[] values = new double[10];

System.out.println(“index 1: “ + values[4];

values[4] = 35.0;

System.out.println(“index 2: “ + values[4];

What is the output?

Answer 17

index 1: 0.0

Index 2: 35.0

Question 18

To grow an array that has run out of space use:

Answer 18

Array.copyOf method

Question 19

Array.copyOf method _________ the length of an array

Answer 19

Doubles

Question 20

With a partially filled array, you need to remember:

Answer 20

How many elements are filled

Question 21

a _________ belongs to the class, motto any of the objects of the class

Answer 21

Static variable

Question 22

All objects created from the class have access to the _________ static variable

Answer 22

Same