Learning Unit 1 Programming Theory

Question 1

Purpose of a programmer

Answer 1

To code programs to be used by the end user.

Question 2

System.out.print or Sytem.out.println()

Answer 2

Uses print() or println() method will display (output window). Whatever is in the round brackets after method name.

Question 3

Print method displays what

Answer 3

Is in brackets on output window and next output will be on the same line.

Question 4

Println method displays what

Answer 4

Is in brackets and next output is on the next line.

Question 5

Function of round brackets () in methods in Java (after their names)

Answer 5

To identify that they are methods.

Question 6

Some methods have

Answer 6

Values in the brackets, some do not.

Question 7

Important to call a method

Answer 7

With the correct number of parameters.

Question 8

IDE

Answer 8

Integrated Development Environment.

Question 9

Java IDE

Answer 9

Enables you to type in code for a Java program and provides options to compile and run your program.

Question 10

IDE possibly highlights

Answer 10

Certain Java words and comments in a different color/in bold.

Question 11

Some IDE’s even provide

Answer 11

Functions that will help you find errors in your code while it is running.

Question 12

When you have a program (_______.java) open your IDE, and you select Compile or Run, the following takes place:

Answer 12

• Java statements are first check for syntax errors (if any errors program can’t compile & error messages display)
• Java program translated into program in Java byte code formate (computer machine code), new file saved with extension class (____.class)
• Successful compilation, bytecode is run.executed by running program
• During execution of program (first statement in main method onwards) output is displayed when relevant statement is carried out