Java Clinic System Syntax Notes

Vocabulary flashcards defining Java syntax, imports, methods, keywords, and file operations based on the Clinic System notes.

import java.io.File;

Imports the File class for files and folders.

import java.io.FileWriter;

Imports FileWriter for writing text into a file.

import java.io.IOException;

Imports IOException for file-related errors.

import java.util.Scanner;

Imports Scanner for getting input and reading files.

public

Accessible from anywhere.

class

Creates a class.

static

Shared by or belongs to the class.

new

Creates an object.

File

Represents a file or directory.

void

Returns nothing.

main

Starting point of a Java program.

int

Whole number data type.

String

Text data type.

Array

Stores multiple values.

do

Runs the code first in a loop before checking the condition.

while

Repeats execution while a condition is true.

System.out.println()

Prints text and moves to the next line.

System.out.print()

Prints text without moving to a new line.

nextInt()

Gets an integer input.

nextLine()

Gets a line of text.

switch

Checks the value of a variable (such as choice).

break;

Stops the current case.

default

Runs when none of the cases match in a switch statement.

exists()

Checks if something exists.

mkdir()

Creates a directory.

createNewFile()

Creates a new file.

FileWriter

Writes text to a file.

Append Mode (true)

Adds new data after existing data in a file.

write()

Writes data into the file.

System.lineSeparator()

Creates a new line.

close()

Closes the FileWriter.

try

Block of code where an error might happen.

catch

Catches the error that occurs in a try block.

IOException

Type of file error.

e.getMessage()

Gets the error message.

isFile()

Checks if the path is a file.

hasNextLine()

Checks for another line in a Scanner input.

list()

Gets the names inside the folder.

getName()

Gets the file name.

getAbsolutePath()

Gets the complete file path.

length()

Gets the file size in bytes.

canRead()

Checks if the file is readable.

canWrite()

Checks if the file is writable.

delete()

Deletes the file, or deletes the directory if it is empty.

return;

Ends the method immediately.

//

Denotes a comment that is ignored by Java and helps explain the code.