Test 2

Question 1

We gota do some recap… If you know this then just 5 star it

Answer 1

yeah and 5 star this too

Question 2

Import a scanner into the class.

Answer 2

import java.util.Scanner;

Question 3

Make a scanner object.

Answer 3

Scanner input = new Scanner(System.in);

Question 4

User input for a int variable

Answer 4

int x = input.nextInt();

Question 5

Make a While loop with a condition it a int x is not int y

Answer 5

while (x != y){
//Code here
}

Question 6

what is a condition?

Answer 6

Its kinda like a true or false statement.
It turns a set of instructions into a true or false.

Question 7

What happens if a condition is true? What happens if it’s false?

Answer 7

In terms of a while loop “True = run”, “False = don’t run just skip”

Question 8

What does it mean to break out of a loop?

Answer 8

It means the condition is false and it does not run the loop again.

Question 9

What is a for loop?
What are the parameters for?

Answer 9

A specific loop that acts with parameters (not the ones from before, I think)
for (variable for counting; number of loops; Increments or decrements){
//Code here
}

Question 10

What is a for loop used for?

Answer 10

Easy way to count how many times you ran a program/you can tell it how many times to run.

while loop, you gotta do more stuff to do that is annoying… tbh its prob easier to use while loops.

Question 11

What is an if statement?

Answer 11

Sadly, the name gives it away

it’s a set of commands given and executed due to the value of the condition on the if, and else if. The else at the end is like a default in a switch statement.

Question 12

Structure of an if statement.

Answer 12

if (Condition) {
//Code here
}
else if (Condition) {
//Code here
}
else {
//Code here
}

Question 13

Try-Catch Block? So like why does it exist?

Answer 13

A Try Catch Block is a made so that you can catch things like errors before it breaks your program. The one we learnt is the one for errors.

Question 14

Try-Catch for any error structure.

Answer 14

try
{
//Code you want to make sure doesn’t break
{
catch(Exception e)
{
//What happens when there is an error?
}

Question 15

Ok ok ok methods
So like why? Why make methods?

Answer 15

Why make functions in math? Well, so that you can see all the values and not just one. Also, it gets very useful and it is used everywhere.

Question 16

What is a public static void mainbalablabla???????!?!?!?!?

Answer 16

So like java is object-oriented and that’s why agam doesn’t wanna learn it.

C
Printf(“”);

Java
public static void main(string[] arg){
System.out.println(“”);
}

Question 17

What is void?

Answer 17

It means that everything in the method, if called, will run.

Question 18

What is a type that is returned?

Answer 18

So a return type is a Method that, when called, will give you whatever the type is.
For example:
public static int(){
int x = 4;
return x;
}

Question 19

What are parameters?

Answer 19

Parameters are Information given when calling a method. This is like math kinda… When you give y as 3 it gives you x as 6.