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Java > Learn Java > how to run a java program
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how to run a java program

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Two ways you can run a Java Program. 1- Through cmd prompt, 2- Through Eclipse. 1- cmd prompt (Write your program and save the file with .java extension. Now open your cmd prompt and give the java file location. (a)- Now type the command "javac yourfilename.java" and click on ENTER button. This will...
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Two ways you can run a Java Program. 1- Through cmd prompt, 2- Through Eclipse. 1- cmd prompt (Write your program and save the file with .java extension. Now open your cmd prompt and give the java file location. (a)- Now type the command "javac yourfilename.java" and click on ENTER button. This will compile the program and checks whether you have syntax error. (b)- Now type the next command "java className" and click on ENTER button. Now the program will run. 2- If you are running in Eclipse. Just click on the RUN button at the topmenu. read less
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Java "name of your class which contains your main method" Example : java sample Note : you need to compile before you run your program (javac filename.java)
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G Chandra babu

If you java beginer just user Notepad or EditPlus editor to write a java program just follow the bellow steps to compile and run a java program steps: 1. develop/ write java code that contain main method 2.save the program as "anyfilename.java"....Note*: you should save with extension of...
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If you java beginer just user Notepad or EditPlus editor to write a java program just follow the bellow steps to compile and run a java program steps: 1. develop/ write java code that contain main method 2.save the program as "anyfilename.java"....Note*: you should save with extension of file ".java" 3.open command prompt and change location of developed java program area 4.here just complie the java program using javacompile syntax for compiling: c:\>javac anyfilename.java (press enter) java compliler is successfully compiles the program 5.Now run the compiled program using "java interpretter program" sysntax for running a java program using "java interpretter program" c:\>java anyfilename (press enter) 6.now output of the program is shown on your console. Hope this article help you understand how to compile and run a java program. if you like the article please like read less
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Software Developer, Expertise in Java/J2ee Technology.

In command prompt, go to java program file location : a.) Compile via command :- javac FileName.java b.) Run via command :- java ClassName Note : FileName is name of java file, which can contain one or more classes. ClassName is name of one of the class in file ie class which...
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In command prompt, go to java program file location : a.) Compile via command :- javac FileName.java b.) Run via command :- java ClassName Note : FileName is name of java file, which can contain one or more classes. ClassName is name of one of the class in file ie class which is needed to run ( usually class containing main() method ). read less
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Computer Science Tutor

go to command prompt then write the following-- For compilation: javac filename.java then press enter For run: java classname then press enter
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Hello Prem Kumar :-). Here is a complete detail of how to run Java Program with other information which is as follows: Java and the Windows Command Prompt ****************************************** This document instructs you on how to use the Windows Command Prompt with Java. These instructions...
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Hello Prem Kumar :-). Here is a complete detail of how to run Java Program with other information which is as follows: Java and the Windows Command Prompt ****************************************** This document instructs you on how to use the Windows Command Prompt with Java. These instructions are specialized to Windows 7, but are similar for Windows... more» read less
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Java/J2EE, B.E./B.Tech/MCA SubjectsTraining

Simpler way is to use Eclipse editor you don't need to compile it.
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under the installation folder for Java(inside Program Files) there are java binaries under the folder named bin, this folder has all the required binaries to execute, compile,create rmi stubs and skeletons etc commands.So firstly make sure that you modify the PATH variable of your computer to point to...
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under the installation folder for Java(inside Program Files) there are java binaries under the folder named bin, this folder has all the required binaries to execute, compile,create rmi stubs and skeletons etc commands.So firstly make sure that you modify the PATH variable of your computer to point to this bin folder, then open the command prompt take it to the folder location of your java program and run javac command followed by your file name with dot java extension...this will generate the necc class files and then run the java command followed by the name of your file without the dot java extension.The same thing can be done easily in Eclipse IDE the only difference is Eclipse does the javac and java command on your behalf. read less
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Teacher

Either run it through cmd or use an IDE like Eclipse
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Software Developer and Trainer with 10 years of experience

You can run a java program either using any IDE(Integrated Development Environment) like Eclipse or Netbeans or simply through the Command Prompt. As you seems to be beginner, I discuss only about running it in command prompt. First, type your java program in any plain text editor like notepad and...
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You can run a java program either using any IDE(Integrated Development Environment) like Eclipse or Netbeans or simply through the Command Prompt. As you seems to be beginner, I discuss only about running it in command prompt. First, type your java program in any plain text editor like notepad and save it in a folder. While saving, name the file by the class name that contains the main function in the program. Save it with .java extension. Before running the program, you have to install Java Development Kit (jdk). Also you need to set the java environment variable. Next, you have to compile your program. To do so, use the "javac" command. Type javac filename.java to compile. If you encounter any errors, clear it and recompile again. Once the compilation is successful, a filename.class file will be created in the same folder where you have stored your .java file. Now your program is ready to run. To run your program use "java" command. Type java classname (same as filename). Now your program will be executed. Hope this will help you . . . Wish you to execute successfully . . . read less
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