Introduction to Java, Java

Introduction to Java

I. Java: Lecture 1 | 31:13 min

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	1 answer Last reply by: Venugopal Ghanta Sat Jan 15, 2011 3:07 PM Post by Venugopal Ghanta on January 14, 2011 are there any programs that let you test this out?
	0 answers Post by Jacob/Benja Share on November 27, 2011 In the Java Script tutorials he said that Java Script and Java have nothing in common but after going through the Java Script this looks very similar.
	1 answer Last reply by: Patti Henderson Wed Nov 7, 2012 2:08 AM Post by Jacob/Benja Share on January 15, 2012 When I tried to run the first java program in terminal this is what I saw: Exception in thread "main" java.lang.NoClassDefFoundError: welcome Caused by: java.lang.ClassNotFoundException: welcome at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247). And this is what I typed in the file "welcome.java": public class welcome { public static void main( string args[] ) { system.out.println( "Welcome" ); } } . Please tell me what I would do. Thx.
	0 answers Post by Kamran Ravan on January 25, 2012 are we going to get the slides?
	0 answers Post by Jialan Wang on March 31, 2012 in 6:05 the program says 500 meters equals 310694.1 miles what's with that
	0 answers Post by Jorge Guerrero on April 2, 2012 Maury, Java is not open-source, even though for now it's free. You should therefore, instruct students on how to setup a developer IDE environment for running Java Script. It won't run on the command prompt either, if you haven't installed the SDK from Oracle's Java site. Neither will NetBeans IDE intall OR run if you don't have the said SDK. The installer takes quite a bit of space on the hard drive, so you should also mention this to students. Once you instruct on what and how to install, THEN you can go ahead and run the scripts. It's not clear for the novice what you're doing or where you're doing it when you're running the example programs.
	0 answers Post by Jorge Guerrero on April 2, 2012 Maury, you should have a section on how to setup the user interface. I set mine up and it was a PAIN. I also had to find a workaround for java to run the programs from the command prompt. It was not easy. Also, the NetBeans program does not run individual project files by clicking the huge green button. You need to right click the file in the project window and run just THAT file. Otherwise, NetBeans will run the main class file and may confuse the user, because the default file is written without errors, but outputs nothing. You really need to include this section, please, for the students and newbies. Seems like learning Java is worth a while; I'll see if all my frustration pays off after taking the two courses offered by educator.com. I like to take courses here for intro.
	0 answers Post by majak maker on May 14, 2012 my question is not about this video. how do you encipher and decipher a text using a key word?
	1 answer Last reply by: Maury Hillstrom Thu Nov 1, 2012 2:38 PM Post by george masih on June 12, 2012 import java.io.; import java.util.; class string { public static void main(String[] args){ Scanner sc = new Scanner(system.in); String i = sc.next(); System.out.println(i); System.out.print("tesing input "); ---------------- i got error when i run this programme i am using eclipse editor it says scanner statement is not correct.is there anyone can help me to correct this programme thanks
	0 answers Post by Patti Henderson on November 7, 2012 Syntax Errors - } ; ) missing
	1 answer Last reply by: Maury Hillstrom Wed Nov 7, 2012 6:41 PM Post by Patti Henderson on November 7, 2012 Can we download and save the slides? Thanks
	0 answers Post by Dana Amin on December 4, 2012 I would like to know if Java is used to creat systems out there please? such as bank system and companies system ? if not what is that language which is used ? thanks
	0 answers Post by R Grose on February 11 at 09:46:53 PM Is there a reference or textbook you recommend to go along with the lecture
	0 answers Post by Jonathan Romo on March 3 at 03:07:21 PM These lectures are hard to follow. If you could elaborate a little more, slow down, and show how to setup the user interface as Jorge Guerrero said that would be really helpful.
	0 answers Post by Natalia Frenkel on April 29 at 01:49:54 PM When I tried to test my first java code, I got thei mwssage: Caused by: java.lang.ClassNotFoundException: chargebac k.MyFirstApp.java at java.net.URLClassLoader.findClass(URLClassLoader.java:434) at java.lang.ClassLoader.loadClass(ClassLoader.java:660) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:358) at java.lang.ClassLoader.loadClass(ClassLoader.java:626) Please, help me to undestand why is that. What should I fix ?

Introduction to Java

Java is an object-oriented, event-driven, stand-alone programming language
Java programs can be created in a standard text editor
Programs can be run through a command prompt or an IDE such as NetBeans
All Java programs must contain the “public static void main” method
Comments can be added by using the double-slash (“//”)

Introduction to Java

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

I. Java
	Introduction to Java	31:13
	Working with Java	31:57
	Classes, Objects, and Methods	29:34
	If Logic	34:20
	Loops	37:00
	Modules	33:56
	Arrays	34:03
	Inheritance	28:15
	Polymorphism	36:53
	Exception Handling	22:45

AP Computer Science: Java


Introduction to Java			31:13
	Intro		0:00
	What is Java?		0:12
		Definition of Java	0:13
	Writing a Java Program		3:48
		Example: Converter IO Program	3:49
		Example: Grade Program	8:00
		Example: Writing a Java Program	12:13
	Starting Point of All Java Code		14:00
		'Public Static Void Main'	14:01
	'Public Static Void Main' Syntax		16:07
		Syntax	16:08
		String	16:27
		args	16:41
	How to Add Comments		17:13
		How to Add and Use Comments	17:14
	Java Statements		17:59
		Java Statements and Example	18:00
	Example1: Text-printing Program		18:44
	Example 2: Text-printing on Multiple Lines		20:12
	Example 3: Addition Program that Displays the Sum of Two Numbers		21:11
	Example 4: Program that Determines Calculations of Two Numbers		24:43
	Example 5: Running Programs Through NetBeans IDE		25:50
Working with Java			31:57
	Intro		0:00
	History of Java		0:09
		History of Java	0:10
	Requirements of Java		2:35
		Free to Download & Install	2:36
		System's Path Environment Variable	4:40
	Java's Two-Step Process		5:48
		Create Source File	5:49
		Compile Source File Into Bytecode	6:49
	Java Application Creation		7:35
		Two Main Ways to Create Java Application	7:36
		Other Popular Java-compatible IDE	8:08
	Importing Classes		8:45
		Importing Classes, Example, and Syntax	8:46
	Arithmetic Rules of Precedence		10:02
		PEMDAS vs. P(MDR)(AD)(Java)	10:03
	Four More Program Examples		13:22
		Example: Circle Geometry	14:06
		Example: Searching Through a Text String	19:50
		Example: Doing a Find & Replace	23:35
		Example: Calendar Functions	25:45
Classes, Objects, and Methods			29:34
	Intro		0:00
	Classes, Objects, and Methods		0:09
		Class	0:10
		Object	0:57
		Attributes	1:14
		Method	1:33
		Arguments	1:48
	Instance Variables		2:17
		Instance Variables	2:18
	Set and Get Methods		3:15
		Set and Get Methods	3:16
	Primitive Types vs. Reference Types		4:11
		Primitive Types	4:12
		Reference Type	6:56
	Constructors		7:22
		Attributes of Constructors	7:23
	Example 1: Prints a Table of Squares and Cubes From 0 to 10		8:26
	Example 2: Bank Account Class with Constructor		11:54
	Example 3: Create and Change Account Object		14:14
	Example 4: Bank Account Debit Function		18:44
	Example 5: Debit Account Balance Program		20:08
	Example 6: Hardware Store Inventory & Invoice		22:50
	Example 7: Hardware Store Inventory & Invoice Main Class		26:05
If Logic			34:20
	Intro		0:00
	The Mighty 'If'		0:08
		If Logic and If Statements	0:09
	Conditional Statements in Java		1:44
		If	1:45
		If…Else	2:07
		If…Else If….Else	2:33
		Switch	3:15
	Pseudocode		3:41
		Pseudocode	3:42
		Examples	4:05
	Compound Assignment Operators		6:17
		Compound Assignment Operators and Examples	6:18
	Boolean Logical Operators		9:02
		&& Operator	9:03
		\| \| Operator	9:58
		! Operator	11:38
	Example 1: Program that Determines the Larger of Two Numbers		13:00
	Example 2: Determine the Largest and Smallest Entry		15:55
	Example 3: Determine if a Number is Odd or Even		19:24
	Example 4: Determine if Three Values Could Form a Triangle		21:44
	Example 5: Run Application for Triangle		24:23
	Example 6: Basic If…Else Statement		25:11
	Example 7: Basic If…Else If…Else Statement		26:52
	Example 8: Catch Possibilities if User Enters Invalid Numbers		28:38
	Example 9: Basic Switch Statement		31:10
Loops			37:00
	Intro		0:00
	Types of Loops		0:07
		For Loop	0:54
		While Loop	1:15
		Do…While Loop	1:39
	Increment and Decrement Operators		2:26
		Operators Overview	3:11
		Pre-Increment	4:34
		Pre-Decrement	5:35
		Post-Increment	6:01
		Post-Decrement	6:25
	Counters vs. Sentinels		7:06
		Counters	7:07
		Sentinels	7:40
	Break & Continue Statements		8:46
		Break	8:47
		Continue	9:29
	While Loop Syntax		10:03
		While Loop Syntax and Example	10:04
	For Loop Syntax		11:54
		For Loop Syntax and Example	11:55
	Example 1: Calculate Commissions for Sales Staff		13:55
	Example 2: Program Calculates Average Miles Per Gallon		18:56
	Example 3: Find the Smallest of Entered Numbers		23:30
	Example 4: Return the Lyrics to 'The 12 Days of Christmas'		27:37
	Example 5: Do While Setup		31:50
	Example 6: Break Loop Statement Example		34:21
	Example 7: Continue Loop Statement Example		35:05
Modules			33:56
	Intro		0:00
	Types of Modules		0:09
		Methods & Classes	0:10
		Packages	0:28
	Static Class Members		1:20
		Static Class Members	1:21
		Example of Static Class Members	1:51
	Queues vs. Stacks		3:21
		Queues	3:51
		Stacks	5:06
		Push and Pop	5:42
	Method Overloading		6:05
		Method Overloading	6:06
	The 'this' Keyword		7:13
		'this' Keyword	7:14
		Example	7:28
	Composition vs. Inheritance		8:05
		Composition and Example	8:23
		Inheritance and Example	9:33
	Example 1: Roll a Six-diced Die 10,000 Times		10:53
	Example 2: Program Calculates Charges for Parking Lot		14:47
	Example 3: Test Application for Class Parking		20:30
	Example 4: Program that Converts Fahrenheit to Celsius and Vice Versa		23:43
	Example 5: Program Simulates Tossing a Coin		29:25
Arrays			34:03
	Intro		0:00
	What is an Array?		0:08
		Attributes of Array	0:09
	Types of Arrays		1:10
		Single-Dimensional	1:18
		Two-Dimensional	2:01
	How to Declare an Array		3:15
		Declaring an Array: Single Dimension	3:16
		Declaring an Array: Two Dimension	4:12
	The Enhanced 'for' Statement		5:02
		'for' Statement	5:03
	Passing Arrays to Methods		7:14
		Pass by Value	7:34
		Pass by Reference	7:54
	Example 1: Simple Array		8:24
	Example 2: Program Simulates Rolling Two Six-sided Dice 36,000 Times		9:54
	Example 3: Application Roll Two Dice		14:49
	Example 4: Program Totals Sales for Sales Staff and Products		17:24
	Example 5: Application for Class Sales		21:08
	Example 6: Card Class Represents a Playing Card		24:43
	Example 7: Deck Class Represents a Deck of Playing Cards		26:36
	Example 8: Card Shuffling and Dealing Application		30:35
Inheritance			28:15
	Intro		0:00
	Composition vs. Inheritance		0:07
		Composition & Example	0:17
		Inheritance & Example	1:16
	Composition vs. Inheritance		2:04
		Visual Diagram	2:05
	Inheritance Class Structure		4:36
		Parent Class	4:37
		Child Class	4:51
		Purpose of Inheritance	5:01
	Method Overriding vs. Overloading		6:32
		Method Overriding	6:39
		Method Overloading	7:28
	Inheritance Class Hierarchy		8:01
		Inheritance Class Hierarchy	8:02
	Protected Members		10:27
		Public, Protected, and Private	10:28
	Example 1: Basic Inheritance with Constructors		12:11
	Example 2: Program Exhibits Both Composition and Inheritance		16:03
	Example 3: Class Point Definition		21:07
	Example 4: Class Quadrilateral Definition		22:15
	Example 5: Class Trapezoid Definition		23:09
	Example 6: Class Parallelogram Definition		24:05
	Example 7: Class Rectangle Definition		24:37
	Example 8: Class Square Definition		24:50
	Example 9: Main Application for Shapes Exercise		25:42
Polymorphism			36:53
	Intro		0:00
	What is Polymorphism?		0:08
		Definition of Polymorphism	0:09
	Polymorphism in Programming		1:10
		Superclass	1:11
		Subclass	2:11
		Variable	2:21
		Method	2:31
	Polymorphism in Programming		3:46
		Superclass	3:47
		Subclass	4:16
		Variable	4:22
		Method	4:31
	Abstract Classes vs. Concrete Classes		6:31
		Abstract Classes	6:32
	Abstract Class Polymorphism Example		9:19
		Abstract Superclass	9:20
		Concrete Subclasses	9:58
	'Final' Keyword for Superclass Methods		13:49
		'Final' Keyword	13:50
		Example	14:21
	Example 1: Program to Demonstrate Basic Polymorphism		16:25
	Example 2: Program to Demonstrate Polymorphism with Multiple Subclasses		18:35
	Example 3: Program Tests Shape Hierarchy		25:12
	Example 4: Definition of Class Shape		27:17
	Example 5: Definition of Class Two Dimensional Shape		28:31
	Example 6: Definition of Class Three Dimensional Shape		29:29
	Example 7: Definition of Class Sphere		33:45
Exception Handling			22:45
	Intro		0:00
	What is Exception Handling?		0:09
		Definition of Exception Handling	0:10
	Why Account for Errors?		1:31
		Why Account for Errors?	1:32
	Common Types of Errors		3:51
		User Caused	3:52
		Programmer or System Caused	5:31
	Using the 'Try… Catch' Process		7:30
		Try	7:35
		Catch	8:27
	Try… Catch Syntax		8:51
		Try… Catch Syntax	8:52
	Uncaught Exceptions		9:44
		Handling Uncaught Exceptions	9:45
	Throw' Statement		11:03
		Throw Statement	11:04
		Throw Syntax	11:22
	Example 1: Program to Catch Divide by Zero Error		11:41
	Example 2: Program to Demonstrate Finally Keyword		16:18
	Example 3: Superclass and Subclass Exceptions		19:20

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Introduction to Java

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Introduction to Java

Introduction to Java

AP Computer Science: Java

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