Run java code cmd

How to run a java program from cmd

Edit: since it looks like you don’t have manifest file, you can put above command in any .bat file & execute that .bat file: Solution 1: you said your command works with a command prompt. Example Output Solution 1: I found this in forums.oracle.com Allows the reuse of a process to execute multiple commands in Windows: http://kr.forums.oracle.com/forums/thread.jspa?messageID=9250051 You need something like SyncPipe Class: Solution 2: If you want to run several commands in the cmd shell then you can construct a single command like this: This page explains more.

How to run Java from cmd?

Based on your question & comments, what I am understanding is you are unable to execute your program from command prompt because of external jars.

Please check name of jar where package com.google.gson exists & do following

javac -cp jar_path.jar Program.java java -cp .:jar_path.jar Program 

If you have multiple such jars then use :

javac -cp jar_path.jar;jar1_path.jar Program.java 

Edit: since it looks like you don’t have manifest file, you can put above command in any .bat file & execute that .bat file:

@echo off javac -cp jar_path.jar;jar1_path.jar Program.java 

How to run Java from cmd?, To do it for all cmd’s you create (1) use SETX (do SETX /? for help) or (2) start gearicon (settings) and search ‘env’ (in older days was ControlPanel/System/AdvancedSystemSettings) – dave_thompson_085 May 1 at 5:28 Add a comment

How to Run Java Programs With Command Prompt

We’ll go over how to write a Java program in Notepad, then how you can compile and run that program directly from the command prompt (cmd) in Windows. The video shows Windows 11, but the same

Execute cmd commands from inside a java program

you said your command works with a command prompt. OK. If you look closely, the command window has a path entry (cmd= echo %PATH%). That’s the difference between executing a command in a command window and executing a java process. You have 2 options.

1. Add the path to the process. 2. Add the path to the clingo command (i.e. "f:\path\clingo.exe . ) 

Item 1 is especially needed when using dos commands. To add a path environment: Runtime.getRuntime().exec not finding file in java environment

You are redirecting standard output to a file. This is not part of the command nor a command line parameter. Is the command interpreter that handles this.

You must invoke the command interpreter to run your program like this:

String command = "cmd /c clingo F:\\clingo\\food1.lp F:\\clingo\\fooddata.txt" + " 0"+" >>F:\\clingo\\foodout.txt"; Process p1 = Runtime.getRuntime().exec(command); 

Note the cmd /c part which invokes the command interpreter to run your command like you would do on a Windows terminal.

On Linux it would be sh -c or whatever shell you like.

EDIT 1

When running the command, clingo.exe must be in your path or it must be in the default directory for the Java interpreter. If not, you should give the full path to the executable, like this:

String command = "cmd /c F:\\clingo\\clingo F:\\clingo\\food1.lp F:\\clingo\\fooddata.txt" + " 0"+" >>F:\\clingo\\foodout.txt"; 

F:\\clingo\\clingo F:\\clingo\\food1.lp F:\\clingo\\fooddata.txt 0 >> F:\\clingo\\foodout.txt 

at a Windows prompt and see if it works as expected. If it works it also should work when run from a Java program. Please, replace the clingo path with the right one for your environment.

Your command must be like this: java -jar yourExecuteable.jar yourParameter In your case: java -jar clingo.jar food1.lp fooddata.txt 0 >>foodout.txt

How to run a java program, Following are the steps − Open a command prompt window and go to the directory where you saved the java program (MyFirstJavaProgram.java). Assume it’s C:\. Type ‘javac MyFirstJavaProgram.java’ and press enter to …

How to compile & run a Java program using Command Prompt?

While many programming environments allow us to compile and run a program within the environment, we can also compile and run java programs using Command Prompt.

After successful installation of JDK in our system and set the path, we can able to compile and execute Java programs using the command prompt.

• Step 1 — Need to create a java program either in Notepad or other IDE.
• Step 2 — Need to save this java file in a folder with » Demo.java » and it can be saved in a folder.
• Step 3 — Need to compile this java file from the command prompt using JAVAC command.
• Step 4 — «Demo.java» file is successfully compiled with a generation of «.class» file.
• Step 5 — Need to execute this java file using JAVA command without «.java» extension.
• Step 6 — Able to see «Welcome to TutorialsPoint» output in the console.

Example

Output

Welcome to TutorialsPoint

How do I run a java program in cmd?, I have created a program in Java, but it is not taking the inputs correctly in edit-plus(compiler) so now I want it to run in cmd. My JSK file is at : C:\Program Files\Java\jdk1.7.0_21\bin and my Java file is at: C:\TurboC4\TC\java new programs. Please tell me the steps to run it in cmd.

How to execute cmd commands via Java

I found this in forums.oracle.com

Allows the reuse of a process to execute multiple commands in Windows: http://kr.forums.oracle.com/forums/thread.jspa?messageID=9250051

 String[] command = < "cmd", >; Process p = Runtime.getRuntime().exec(command); new Thread(new SyncPipe(p.getErrorStream(), System.err)).start(); new Thread(new SyncPipe(p.getInputStream(), System.out)).start(); PrintWriter stdin = new PrintWriter(p.getOutputStream()); stdin.println("dir c:\\ /A /Q"); // write any other commands you want here stdin.close(); int returnCode = p.waitFor(); System.out.println("Return code = " + returnCode); 

class SyncPipe implements Runnable < public SyncPipe(InputStream istrm, OutputStream ostrm) < istrm_ = istrm; ostrm_ = ostrm; >public void run() < try < final byte[] buffer = new byte[1024]; for (int length = 0; (length = istrm_.read(buffer)) != -1; ) < ostrm_.write(buffer, 0, length); >> catch (Exception e) < e.printStackTrace(); >> private final OutputStream ostrm_; private final InputStream istrm_; > 

If you want to run several commands in the cmd shell then you can construct a single command like this:

 rt.exec("cmd /c start cmd.exe /K \"cd c:/ && dir\""); 

Every execution of exec spawns a new process with its own environment. So your second invocation is not connected to the first in any way. It will just change its own working directory and then exit (i.e. it’s effectively a no-op).

If you want to compose requests, you’ll need to do this within a single call to exec . Bash allows multiple commands to be specified on a single line if they’re separated by semicolons; Windows CMD may allow the same, and if not there’s always batch scripts.

As Piotr says, if this example is actually what you’re trying to achieve, you can perform the same thing much more efficiently, effectively and platform-safely with the following:

String[] filenames = new java.io.File("C:/").list(); 

How to Run a Java program in Windows 10, How to install Java? Step 1) Visit the oracle website and then click on download. Step 2) Now, on the next page, click on Accept License Agreement and download the .exe file of JDK for windows. Step 3) After downloading the file, start the installation process by clicking on the file.

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How to run Java Program in cmd (Command Prompt)

In this article, we will learn how to run the Java Program in cmd / using command prompt.

We are using Java compiler javac for compiling the Java program and Java interpreter java for running the Java program.

Let’s get started :

How to run a Java Program using CMD

We need to follow below mentioned steps in order to run the Java in CMD :

• Create a folder in your machine.
• Create one Java class with some logic.
• Open the command prompt or cmd in your machine.
• Run the Program in CMD.

Create a folder

let’s create a folder named as Sample in your C drive of your machine.

Create a Simple Class

Let’s save this class with name – Test.java in the Sample folder.

Open Command Prompt / CMD

Open command prompt in your machine. You can also open it by typing cmd in run window.

Run the Java Program in CMD

Below are the required steps in cmd :

Now the current directory is Sample.

C:\Sample> set path=%path%;C:\Program Files\Java\jdk1.8.0_101\bin

Replace the above JDK version with your installed java version.

This will Compile the program in cmd.

This is how to run the program in cmd using interpreter.

It will print the following output :

Output:Sample Class to test

Additional Points

You need to ensure that your Windows is able to find the Java compiler and interpreter or not.

Follow below steps :

• Go to Start -> Computer -> System Properties -> Advanced System Settings -> Environment Variables -> System Variables -> PATH

• Click on the “Edit” button.

• Append the semicolon and then jdk path at the end.

• Click on OK button.

Conclusion

We have learnt how to run java program in cmd. It is a very basic question yet very important. To install java in your machine, you can visit url.

You can check your java version with following commands in cmd :

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Run java code cmd

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