Java Basics

Front

What is the keyword to run a java file?

Back

java

Front

If you have a syntax error in a line of code, but you have not compiled the part of the code that includes the error, what is the outcome of running of the code?

Back

The code runs without errors but only the part that was compiled produces an output (the error is not read/run)

Front

You can have multiple classes within the same file

Back

True

Front

When you have multiple classes within the same file, which of the following occurs when the file is compiled? The computer throws an error, you cannot have multiple classes within the same file, It creates the class file for the first class, but not the rest, It creates multiple class files (one for each class), Nothing occurs

Back

It creates multiple class files (one for each class)

Front

What is the command for compiling a file with multiple classes?

Back

file_name javac

Front

What is generally the problem when the system says 'file not found' -- what should you check for before running a java file? Options: Make sure all the words are in all caps, Make sure that the file is in the right path (the terminal path is where the file is located), The file name MUST match the class name

Back

Make sure that the file is in the right path (the terminal path is where the file is located)

Front

What is the extension of the file that is created after compilation?

Back

.class

Front

Which data structure applies to the following: 'a'

Back

char

Front

What happens when running this?
public void static main(String[]args) {
double a = 1.0;
double b = 2.0;
int c = a + b;
System.out.println(c);
}

Back

The system throws an error because the sum of two doubles cannot be assigned to an integer