Difference between revisions of "Java/C2/Hello-World-Program-in-Eclipse/English-timed"
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− | || Time | + | || '''Time''' |
− | || Narration | + | || '''Narration''' |
|- | |- | ||
| 00:01 | | 00:01 | ||
− | | Welcome to the spoken tutorial on '''HelloWorld in Java | + | | Welcome to the spoken tutorial on '''HelloWorld in Java''' using '''Eclipse'''. |
|- | |- | ||
| 00:06 | | 00:06 | ||
− | | In this tutorial, we are going to learn | + | | In this tutorial, we are going to learn how to write a simple '''Hello World''' program in '''Java''' using '''Eclipse.''' |
|- | |- | ||
| 00:13 | | 00:13 | ||
− | | For this tutorial we are using Eclipse 3.7.0 and Ubuntu 11.10 | + | | For this tutorial, we are using '''Eclipse 3.7.0''' and '''Ubuntu 11.10'''. |
|- | |- | ||
| 00:20 | | 00:20 | ||
− | | To follow this tutorial you must have Eclipse installed on your system. | + | | To follow this tutorial, you must have '''Eclipse''' installed on your system. |
− | + | ||
− | + | ||
|- | |- | ||
| 00:25 | | 00:25 | ||
− | | And you must know how to create, save and run a file in Eclipse. | + | | And you must know how to '''create, save''' and '''run''' a file in '''Eclipse'''. |
− | + | ||
− | + | ||
|- | |- | ||
| 00:30 | | 00:30 | ||
− | | If not, for relevant | + | | If not, for relevant tutorials, please visit our website as shown. |
|- | |- | ||
| 00:36 | | 00:36 | ||
− | | Here is a line of java code that prints the message '''Hello World''' | + | | Here is a line of java code that prints the message '''Hello World'''. |
− | + | ||
− | + | ||
|- | |- | ||
| 00:44 | | 00:44 | ||
− | | Now let us try it on '''Eclipse'''. | + | | Now, let us try it on '''Eclipse'''. |
|- | |- | ||
| 00:46 | | 00:46 | ||
− | | Press '''Alt | + | | Press '''Alt, F2''' and in the dialog box, type '''eclipse''' and hit '''Enter'''. |
− | + | ||
− | + | ||
|- | |- | ||
| 00:56 | | 00:56 | ||
− | | Click''' | + | | Click '''OK''' at the workspace and here we have the 'Eclipse IDE'. |
|- | |- | ||
| 01:09 | | 01:09 | ||
− | | Now let us add a '''new project'''. | + | | Now, let us add a '''new project'''. |
− | + | ||
− | + | ||
|- | |- | ||
| 01:12 | | 01:12 | ||
− | | | + | | Click '''File''', '''New ''' and select '''Project '''. |
|- | |- | ||
| 01:19 | | 01:19 | ||
− | | In the list of | + | | In the list of projects, select '''Java Project ''' and click '''Next.''' |
− | + | ||
− | + | ||
− | + | ||
|- | |- | ||
| 01:26 | | 01:26 | ||
− | | In the project name , | + | | In the project name, type '''DemoProject''' (please note that there is no space between '''Demo''' and ''' Project''', D & P are in capital letters). |
− | + | ||
|- | |- | ||
Line 78: | Line 64: | ||
|- | |- | ||
| 01:46 | | 01:46 | ||
− | | '''DemoProject ''' has been created. | + | | '''DemoProject''' has been created. |
|- | |- | ||
|01:49 | |01:49 | ||
− | |Now let us add ''' | + | |Now, let us add a new '''class''' to the project. |
− | + | ||
|- | |- | ||
|01:52 | |01:52 | ||
− | |'''Right click''' on the ''' Project ''' | + | |'''Right click''' on the ''' Project''', '''New''', select '''Class'''. |
|- | |- | ||
| 01:59 | | 01:59 | ||
− | | In the class name type '''DemoProgram''' and in the method stubs select one that says''' | + | | In the '''class''' name, type '''DemoProgram''' and in the '''method stubs''' select one that says '''public static void main'''. |
|- | |- | ||
| 02:13 | | 02:13 | ||
− | | Click Finish at the bottom right corner of the wizard. | + | | Click '''Finish''' at the bottom right corner of the wizard. |
− | + | ||
|- | |- | ||
| 02:20 | | 02:20 | ||
− | | We can | + | | We can see that the''' DemoProject''' has the '''source directory''' and a file called '''DemoProgram.Java'''. |
|- | |- | ||
|02:27 | |02:27 | ||
− | |This is because every class in Java has to be in its own file. Hence the class | + | |This is because every '''class''' in Java has to be in its own file. Hence the '''class''' 'DemoProgram' can exist only in the file '''Demoprogram.java'''. |
|- | |- | ||
|02:40 | |02:40 | ||
− | | We can see that there is very little space for the editor and the view looks | + | | We can see that there is very little space for the editor and the view looks cluttered. Let us minimize the other portlets and here we have the editor . |
|- | |- | ||
|02:55 | |02:55 | ||
− | |Notice that this line begins with two slashes which means this line is the comment and has nothing to do with our code. | + | |Notice that this line begins with two slashes which means this line is the '''comment''' and has nothing to do with our code. |
|- | |- | ||
|03:05 | |03:05 | ||
− | |Let us remove this line. Similarly every thing that is in between '''slash Astrix ''' | + | |Let us remove this line. Similarly every thing that is in between '''slash Astrix''' (/*) and '''Astrix slash''' (*/) is also a comment. |
− | + | ||
|- | |- | ||
|03:17 | |03:17 | ||
− | |So let us remove this | + | |So, let us remove this comment also. |
|- | |- | ||
|03:22 | |03:22 | ||
− | | | + | |And here we have the '''bare bones''' of the code. |
|- | |- | ||
|03:27 | |03:27 | ||
|Now let us add the print statement,''' System.''' | |Now let us add the print statement,''' System.''' | ||
− | |||
|- | |- | ||
|03:35 | |03:35 | ||
− | |Notice that eclipse gives a list of all the possible completions. | + | |Notice that '''eclipse''' gives a list of all the possible completions. |
|- | |- | ||
|03:38 | |03:38 | ||
− | |For now we are going to type the command manually; | + | |For now, we are going to type the command manually; |
|- | |- | ||
|03:43 | |03:43 | ||
− | | | + | |'''out.println'''. In brackets in quotes type: '''Hello World''' |
|- | |- | ||
|03:56 | |03:56 | ||
− | |In java, | + | |In java, every statement has to end with a semicolon. |
|- | |- | ||
|03:59 | |03:59 | ||
− | |So let us add a semicolon. | + | |So, let us add a semicolon. |
|- | |- | ||
|04:03 | |04:03 | ||
− | |Here these are complete '''HelloWorld''' program in ''' Java'''. | + | |Here, these are complete '''HelloWorld''' program in ''' Java'''. |
|- | |- | ||
|04:06 | |04:06 | ||
− | |Press '''Ctrl + S''' to save | + | |Press '''Ctrl + S''' to save. |
|- | |- | ||
|04:11 | |04:11 | ||
− | |Right click | + | |Right click '''Run as''', '''Java Application''' to '''run''' the code. |
|- | |- | ||
|04:19 | |04:19 | ||
− | |As we can see on the output console, the message ''' | + | |As we can see on the output console, the message '''Hello World''' has been printed. |
|- | |- | ||
|04:24 | |04:24 | ||
− | |Now let us change the | + | |Now, let us change the "World" to "Java". |
|- | |- | ||
|04:30 | |04:30 | ||
− | |Save it with '''Ctrl + S''' and ''' | + | |Save it with '''Ctrl + S''' and '''run''' it. |
|- | |- | ||
− | |04: | + | |04:40 |
− | |As we can see, the message that is printed now is '''Hello Java''' | + | |As we can see, the message that is printed now is '''Hello Java'''. |
|- | |- | ||
Line 182: | Line 164: | ||
|- | |- | ||
|04:48 | |04:48 | ||
− | |The first line indicates that the | + | |The first line indicates that the '''class''' name is 'DemoProgram' and it's a '''Public class'''. |
|- | |- | ||
|04:55 | |04:55 | ||
− | | The second line indicates that this is the '''main method'''. In other words the | + | | The second line indicates that this is the '''main method'''. In other words the '''method''' from which execution starts with java. |
|- | |- | ||
|05:04 | |05:04 | ||
− | |As we know this is a print statement. | + | |As we know, this is a print statement. |
|- | |- | ||
|05:07 | |05:07 | ||
− | |And here is how we write a ''' | + | |And here is how we write a '''Hello World''' program in Java. |
|- | |- | ||
|05:14 | |05:14 | ||
− | |This brings us to the end of the | + | |This brings us to the end of the tutorial. |
|- | |- | ||
|05:17 | |05:17 | ||
− | |In this tutorial we have learnt how to write a ' | + | |In this tutorial, we have learnt how to write a '''Hello World''' program in java and also what each part of code does in java code. |
|- | |- | ||
|05:27 | |05:27 | ||
− | |As an assignment for this tutorial | + | |As an assignment for this tutorial- |
|- | |- | ||
|05:29 | |05:29 | ||
− | | | + | | create a java class by the name '''Greet''', it should bring "Program Successful" when executed. |
− | + | ||
− | + | ||
|- | |- | ||
Line 221: | Line 201: | ||
|- | |- | ||
|05:42 | |05:42 | ||
− | | It | + | | It summarizes the Spoken Tutorial project. |
− | + | ||
|- | |- | ||
|05:45 | |05:45 | ||
− | | If you do not have good bandwidth, you can download and watch it | + | | If you do not have good bandwidth, you can download and watch it. |
− | + | ||
|- | |- | ||
|05:51 | |05:51 | ||
− | |The Spoken Tutorial | + | |The Spoken Tutorial team: |
|- | |- | ||
|05:53 | |05:53 | ||
− | |Conducts workshops using spoken tutorials | + | |Conducts workshops using spoken tutorials. |
− | + | ||
|- | |- | ||
|05:55 | |05:55 | ||
− | |Gives certificates for those who pass an online test | + | |Gives certificates for those who pass an online test. |
|- | |- | ||
|05:59 | |05:59 | ||
− | | For more details, please write to | + | | For more details, please write to contact@spoken-tutorial.org . |
|- | |- | ||
|06:05 | |06:05 | ||
− | | Spoken Tutorial Project is a part of the Talk to a Teacher project | + | | Spoken Tutorial Project is a part of the Talk to a Teacher project. |
|- | |- | ||
|06:09 | |06:09 | ||
− | |It is supported by the National Mission on Education through ICT, MHRD, Government of India | + | |It is supported by the National Mission on Education through ICT, MHRD, Government of India. |
|- | |- | ||
|06:14 | |06:14 | ||
− | |More information on this | + | |More information on this mission is available at '''spoken HYPHEN tutorial DOT org SLASH NMEICT HYPHEN Intro'''. |
|- | |- | ||
|06:19 | |06:19 | ||
|This tutorial has been contributed by '''TalentSprint'''. | |This tutorial has been contributed by '''TalentSprint'''. |
Latest revision as of 22:44, 3 April 2015
Time | Narration |
00:01 | Welcome to the spoken tutorial on HelloWorld in Java using Eclipse. |
00:06 | In this tutorial, we are going to learn how to write a simple Hello World program in Java using Eclipse. |
00:13 | For this tutorial, we are using Eclipse 3.7.0 and Ubuntu 11.10. |
00:20 | To follow this tutorial, you must have Eclipse installed on your system. |
00:25 | And you must know how to create, save and run a file in Eclipse. |
00:30 | If not, for relevant tutorials, please visit our website as shown. |
00:36 | Here is a line of java code that prints the message Hello World. |
00:44 | Now, let us try it on Eclipse. |
00:46 | Press Alt, F2 and in the dialog box, type eclipse and hit Enter. |
00:56 | Click OK at the workspace and here we have the 'Eclipse IDE'. |
01:09 | Now, let us add a new project. |
01:12 | Click File, New and select Project . |
01:19 | In the list of projects, select Java Project and click Next. |
01:26 | In the project name, type DemoProject (please note that there is no space between Demo and Project, D & P are in capital letters). |
01:40 | Click Finish at the bottom right corner of the wizards. |
01:46 | DemoProject has been created. |
01:49 | Now, let us add a new class to the project. |
01:52 | Right click on the Project, New, select Class. |
01:59 | In the class name, type DemoProgram and in the method stubs select one that says public static void main. |
02:13 | Click Finish at the bottom right corner of the wizard. |
02:20 | We can see that the DemoProject has the source directory and a file called DemoProgram.Java. |
02:27 | This is because every class in Java has to be in its own file. Hence the class 'DemoProgram' can exist only in the file Demoprogram.java. |
02:40 | We can see that there is very little space for the editor and the view looks cluttered. Let us minimize the other portlets and here we have the editor . |
02:55 | Notice that this line begins with two slashes which means this line is the comment and has nothing to do with our code. |
03:05 | Let us remove this line. Similarly every thing that is in between slash Astrix (/*) and Astrix slash (*/) is also a comment. |
03:17 | So, let us remove this comment also. |
03:22 | And here we have the bare bones of the code. |
03:27 | Now let us add the print statement, System. |
03:35 | Notice that eclipse gives a list of all the possible completions. |
03:38 | For now, we are going to type the command manually; |
03:43 | out.println. In brackets in quotes type: Hello World |
03:56 | In java, every statement has to end with a semicolon. |
03:59 | So, let us add a semicolon. |
04:03 | Here, these are complete HelloWorld program in Java. |
04:06 | Press Ctrl + S to save. |
04:11 | Right click Run as, Java Application to run the code. |
04:19 | As we can see on the output console, the message Hello World has been printed. |
04:24 | Now, let us change the "World" to "Java". |
04:30 | Save it with Ctrl + S and run it. |
04:40 | As we can see, the message that is printed now is Hello Java. |
04:45 | Now let us understand what each part of code does? |
04:48 | The first line indicates that the class name is 'DemoProgram' and it's a Public class. |
04:55 | The second line indicates that this is the main method. In other words the method from which execution starts with java. |
05:04 | As we know, this is a print statement. |
05:07 | And here is how we write a Hello World program in Java. |
05:14 | This brings us to the end of the tutorial. |
05:17 | In this tutorial, we have learnt how to write a Hello World program in java and also what each part of code does in java code. |
05:27 | As an assignment for this tutorial- |
05:29 | create a java class by the name Greet, it should bring "Program Successful" when executed. |
05:37 | To know more about the spoken-tutorial project. |
05:39 | Watch the video available at the following link.[1] |
05:42 | It summarizes the Spoken Tutorial project. |
05:45 | If you do not have good bandwidth, you can download and watch it. |
05:51 | The Spoken Tutorial team: |
05:53 | Conducts workshops using spoken tutorials. |
05:55 | Gives certificates for those who pass an online test. |
05:59 | For more details, please write to contact@spoken-tutorial.org . |
06:05 | Spoken Tutorial Project is a part of the Talk to a Teacher project. |
06:09 | It is supported by the National Mission on Education through ICT, MHRD, Government of India. |
06:14 | More information on this mission is available at spoken HYPHEN tutorial DOT org SLASH NMEICT HYPHEN Intro. |
06:19 | This tutorial has been contributed by TalentSprint. |
Contributors and Content Editors
Arya Ratish, Devraj, Gaurav, Kavita salve, Krupali, PoojaMoolya, Priyacst, Sandhya.np14, Sneha, Vasudeva ahitanal