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Thread: My Java program is failing to run in command prompt

  1. #1
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    Default My Java program is failing to run in command prompt

    My Java program is failing to run in command prompt and no result is produced.I am currently using windows 8 and I have changed my Environmental variable to C:\Windows\system32;C:\Program files\Java\jdk\bin.


  2. #2
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: My Java program is failing to run in command prompt

    What error do you get? What code are you trying to run?
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    Default Re: My Java program is failing to run in command prompt

    public class MyFirstJavaProgram{
    public static void main(String[]args){
    System.out.printIn("Hello World");
    }
    }
    When I click enter to run,nothing is happening

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    Junior Member Tjones787's Avatar
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    Default Re: My Java program is failing to run in command prompt

    What error did you get when you try to run the program.
    Tjones787

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    Senior Member PhHein's Avatar
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    Default Re: My Java program is failing to run in command prompt

    What conmmands did you use to compile and run?

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    Default Re: My Java program is failing to run in command prompt

    No error but simply its not producing the output hello world.When I press enter the cursor moves to the next line

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    Default Re: My Java program is failing to run in command prompt

    System.out.printIn != System.out.println()

    Upper-case I != lower-case l.

    That should generate a compiler error. What IDE are you using? I *highly* suggest using the command line to compile your code until you have a better understanding of what's going on.
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    Default Re: My Java program is failing to run in command prompt

    I used C:\'javac MyFirstJavaProgram.java'
    and then C:\'java MyFirstJavaProgram'

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    Default Re: My Java program is failing to run in command prompt

    If you are running this program from command prompt, please can you type commands "javac" and "java" and check if its showing some output?
    Thanks and regards,
    Sambit Swain

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    Default Re: My Java program is failing to run in command prompt

    You need to post the full text of your command prompt, starting with the javac command. Just copy any paste it here.
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    Default Re: My Java program is failing to run in command prompt

    okay I wil try this.I am using jdk 1.6.0_35

    --- Update ---

    Microsoft Windows [Version 6.2.9200]
    (c) 2012 Microsoft Corporation. All rights reserved.

    C:\Users\Attache Students>C:\'javac MyFirstJavaProgram.java'
    'C:\'javac' is not recognized as an internal or external command,
    operable program or batch file.

    C:\Users\Attache Students>

    Now its failing to recognize javac

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    Default Re: My Java program is failing to run in command prompt

    You need to make sure your jdk bin is on your path. Recommended reading: Lesson: Common Problems (and Their Solutions) (The Java™ Tutorials > Getting Started)
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    Default Re: My Java program is failing to run in command prompt

    okay Kevin thanks

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    Default Re: My Java program is failing to run in command prompt

    As per the above comment by KevinWorkman, if path is set correctly then you java program will execute successfully. Post here if you find any further issues.
    Thanks and regards,
    Sambit Swain

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    Default Re: My Java program is failing to run in command prompt

    Quote Originally Posted by Sambit View Post
    As per the above comment by KevinWorkman, if path is set correctly then you java program will execute successfully. Post here if you find any further issues.
    The program he posted contains compiler errors, as I pointed out.
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    Default Re: My Java program is failing to run in command prompt

    Sorry, I missed that. it has to println() method and import is missing.
    Thanks and regards,
    Sambit Swain

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    Default Re: My Java program is failing to run in command prompt

    There is no import missing.

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    Default Re: My Java program is failing to run in command prompt

    Yes, import statements are not required for this.
    Thanks and regards,
    Sambit Swain

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    Default Re: My Java program is failing to run in command prompt

    Quote Originally Posted by Sambit View Post
    it has to println() method and import is missing.
    It's great that you're trying to help, but please make sure your advice is accurate before you post.
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    Default Re: My Java program is failing to run in command prompt

    C:\Users\Attache Students>C:\'javac MyFirstJavaProgram.java'
    Leave off the "C:\". That tells the OS to look in the C:\ folder for the javac command.
    If the bin folder is on the PATH, you should be able to enter javac without a path:
    C:\Users\Attache Students>javac MyFirstJavaProgram.java
    If you don't understand my answer, don't ignore it, ask a question.

  22. The Following User Says Thank You to Norm For This Useful Post:

    KevinWorkman (January 23rd, 2014)

  23. #22
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: My Java program is failing to run in command prompt

    Quote Originally Posted by Norm View Post
    Leave off the "C:\". That tells the OS to look in the C:\ folder for the javac command.
    If the bin folder is on the PATH, you should be able to enter: javac without a path
    C:\Users\Attache Students>javac MyFirstJavaProgram.java
    Good catch. My brain just absorbed that as part of the command prompt path. I must be getting old...
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    Default Re: My Java program is failing to run in command prompt

    there is problem with ur java,,
    just open command prompt and
    set path of your bin

    i know it wont make any change as you have added the path to envt. variable .. but just check..

    if the same error proccedes i suggest you to use netbeans.

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    Default Re: My Java program is failing to run in command prompt

    I think its now working.I have opened blue j and its running after I have installed a new jdk

    --- Update ---

    import java.io.*;
    public class DeductionRecords{
    string DeductionRecords="DED";
    string Transactiontype;
    static final short ADCODE=4360;
    string Payeecode;

    double Amountincents;

    public DEDUCTION RECORDS(string name){
    this.name=name;
    }
    //Assign payee code to variable payee code
    public void recpayeecode (String recpayeecode){
    payeecode=recpayeecode;
    }
    /*Assign Amount in cents to variable amount in cents*/
    public void recamountincents(double recamountincents){
    amountincents=recamountincents;
    }
    /*Assign policy ref number to variable policy ref number*/
    public void recpolicyrefnumber(string policyrefnumber){
    policyrefnumber=recpolicyrefnumber;
    }
    //Print the deduction records details
    public void print DeductionRecords(){
    system.out.printIn("name:"+name);
    system.out.printIn("ec number:"+ec number)
    system.out.printIn("Transaction type:+Transaction type)
    system.out.printIn("AD CODE:+AD CODE)
    system.out.printIn("payee code:"+payee code)
    system.out.printIn("policy ref number:+policy ref number)
    system.out.printIn("From date:"+From date)
    system.out.printIn("To date:"+To date)
    system.out.printIn("Amount in cents:"=amount in cents)
    }
    }
    My code is failing to compile on line 23 where its written public void print DeductionRecords(){
    I am using Blue J.May you examine my code

    --- Update ---

    import java.io.*;
    public class DeductionRecords{
    string DeductionRecords="DED";
    string Transactiontype;
    static final short ADCODE=4360;
    string Payeecode;

    double Amountincents;

    public DEDUCTION RECORDS(string name){
    this.name=name;
    }
    //Assign payee code to variable payee code
    public void recpayeecode (String recpayeecode){
    payeecode=recpayeecode;
    }
    /*Assign Amount in cents to variable amount in cents*/
    public void recamountincents(double recamountincents){
    amountincents=recamountincents;
    }
    /*Assign policy ref number to variable policy ref number*/
    public void recpolicyrefnumber(string policyrefnumber){
    policyrefnumber=recpolicyrefnumber;
    }
    //Print the deduction records details
    public void print DeductionRecords(){
    system.out.printIn("name:"+name);
    system.out.printIn("ec number:"+ec number)
    system.out.printIn("Transaction type:+Transaction type)
    system.out.printIn("AD CODE:+AD CODE)
    system.out.printIn("payee code:"+payee code)
    system.out.printIn("policy ref number:+policy ref number)
    system.out.printIn("From date:"+From date)
    system.out.printIn("To date:"+To date)
    system.out.printIn("Amount in cents:"=amount in cents)
    }
    }
    My code is failing to compile on line 23 where its written public void print DeductionRecords(){
    I am using Blue J.May you examine my code

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    Default Re: My Java program is failing to run in command prompt

    If you check the compilation error, you can easily understand the issue. Check the syntax of method defination..
    Thanks and regards,
    Sambit Swain

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