Thread: Error JOption

Hello! I am a beginner, along with introducing myself, I have the following problem in my basic java code. I think everything is fine, but for some reason the machine gives me an error...

 
 
package com.mycompany.holamundo;
 
import javax.swing.JOptionPane;
 
 
/**
 */public class Holamundo {
 
   public static void main (String [] args){
 
       String cadena;
       int entero;
       char letra;
       double decimal;
 
       cadena = JOptionPane.showInputDialog("Digite cadena");
       entero = Integer.parseInt(JOptionPane.showInputDialog("Digite entero"));
       letra =  JOptionPane.showInputDialog("Digite caracter").charAt(0);
       decimal = Double.parseDouble(JOptionPane.showInputDialog("Digite decimal"));
 
     JoptionPane.showMessageDialog(null,"La cadena es"+cadena);
     JoptionPane.showMessageDialog(null,"La cadena es"+entero);
     JoptionPane.showMessageDialog(null,"El numero es"+letra);
     JoptionPane.showMessageDialog(null,"El decimal es"+decimal);
 
   }
  }

Error message:



----------------------< com.mycompany:Holamundo >-----------------------
Building Holamundo 1.0-SNAPSHOT
from pom.xml
--------------------------------[ jar ]---------------------------------

--- resources:3.3.1:resources (default-resources) @ Holamundo ---
skip non existing resourceDirectory C:\Users\danie\OneDrive\Documents\NetBeansProjects \Holamundo\src\main\resources

--- compiler:3.11.0:compile (default-compile) @ Holamundo ---
Changes detected - recompiling the module! :source
Compiling 3 source files with javac [debug target 22] to target\classes

--- exec:3.1.0:exec (default-cli) @ Holamundo ---
Exception in thread "main" java.lang.UnsupportedOperationException: Not supported yet.
at com.mycompany.holamundo.JoptionPane.showMessageDia log(JoptionPane.java:14)
at com.mycompany.holamundo.Holamundo.main(Holamundo.j ava:24)
Command execution failed.
org.apache.commons.exec.ExecuteException: Process exited with an error: 1 (Exit value: 1)
at org.apache.commons.exec.DefaultExecutor.executeInt ernal (DefaultExecutor.java:404)
at org.apache.commons.exec.DefaultExecutor.execute (DefaultExecutor.java:166)
at org.codehaus.mojo.exec.ExecMojo.executeCommandLine (ExecMojo.java:1000)
at org.codehaus.mojo.exec.ExecMojo.executeCommandLine (ExecMojo.java:947)
at org.codehaus.mojo.exec.ExecMojo.execute (ExecMojo.java:471)
at org.apache.maven.plugin.DefaultBuildPluginManager. executeMojo (DefaultBuildPluginManager.java:126)
at org.apache.maven.lifecycle.internal.MojoExecutor.d oExecute2 (MojoExecutor.java:328)
at org.apache.maven.lifecycle.internal.MojoExecutor.d oExecute (MojoExecutor.java:316)
at org.apache.maven.lifecycle.internal.MojoExecutor.e xecute (MojoExecutor.java:212)
at org.apache.maven.lifecycle.internal.MojoExecutor.e xecute (MojoExecutor.java:174)
at org.apache.maven.lifecycle.internal.MojoExecutor.a ccess$000 (MojoExecutor.java:75)
at org.apache.maven.lifecycle.internal.MojoExecutor$1 .run (MojoExecutor.java:162)
at org.apache.maven.plugin.DefaultMojosExecutionStrat egy.execute (DefaultMojosExecutionStrategy.java:39)
at org.apache.maven.lifecycle.internal.MojoExecutor.e xecute (MojoExecutor.java:159)
at org.apache.maven.lifecycle.internal.LifecycleModul eBuilder.buildProject (LifecycleModuleBuilder.java:105)
at org.apache.maven.lifecycle.internal.LifecycleModul eBuilder.buildProject (LifecycleModuleBuilder.java:73)
at org.apache.maven.lifecycle.internal.builder.single threaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:53)
at org.apache.maven.lifecycle.internal.LifecycleStart er.execute (LifecycleStarter.java:118)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:261)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:173)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:101)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:906)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:283)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:206)
at jdk.internal.reflect.DirectMethodHandleAccessor.in voke (DirectMethodHandleAccessor.java:103)
at java.lang.reflect.Method.invoke (Method.java:580)
at org.codehaus.plexus.classworlds.launcher.Launcher. launchEnhanced (Launcher.java:283)
at org.codehaus.plexus.classworlds.launcher.Launcher. launch (Launcher.java:226)
at org.codehaus.plexus.classworlds.launcher.Launcher. mainWithExitCode (Launcher.java:407)
at org.codehaus.plexus.classworlds.launcher.Launcher. main (Launcher.java:348)
------------------------------------------------------------------------
BUILD FAILURE
------------------------------------------------------------------------
Total time: 16.822 s
Finished at: 2024-08-03T10:23:17-04:00
------------------------------------------------------------------------
Failed to execute goal org.codehaus.mojo:exec-maven-plugin:3.1.0:exec (default-cli) on project Holamundo: Command execution failed.: Process exited with an error: 1 (Exit value: 1) -> [Help 1]

To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.

For more information about the errors and possible solutions, please read the following articles:
[Help 1] http://cwiki.apache.org/confluence/d...utionException


If anyone can help me, thank you!

the machine gives me an error..

Please copy the full text of the error message and paste it here so we can see what the error is.

Please edit your post and wrap your code with code tags:

[code]
**YOUR CODE GOES HERE**
[/code]

to get highlighting and preserve formatting.

That is a lot of error messages for a simple misspelling of a name. I have never seen an error trace like that.
I do not see anything in the trace that I recognize.
What IDE are you using?

Here are the error messages I get when I compile the source:

Running: C:\Program Files\Java\jdk1.8.0_60\bin\javac.exe -cp . -Xlint -Xdiags:verbose Holamundo.java

Holamundo.java:20: error: cannot find symbol
JoptionPane.showMessageDialog(null,"La cadena es"+cadena);
^
symbol: variable JoptionPane
location: class Holamundo
Holamundo.java:21: error: cannot find symbol
JoptionPane.showMessageDialog(null,"La cadena es"+entero);
^
symbol: variable JoptionPane
location: class Holamundo
Holamundo.java:22: error: cannot find symbol
JoptionPane.showMessageDialog(null,"El numero es"+letra);
^
symbol: variable JoptionPane
location: class Holamundo
Holamundo.java:23: error: cannot find symbol
JoptionPane.showMessageDialog(null,"El decimal es"+decimal);
^
symbol: variable JoptionPane
location: class Holamundo
4 errors

4 error(s)

The above error message says: cannot find symbol variable JoptionPane
Look at the spelling of that variable: it use an o vs an O

I do not know anything about your IDE. It looks like there is something wrong with the IDE's setup.
Sorry, I can not help with the setup of the Netbeans IDE.
Why are you using the Netbeans IDE?
Has anything else worked with the IDE?
Did the IDE ever work or has the problem been only with this source file?

Here is a thread that may be of interest: https://www.coderanch.com/t/781073/j...Java-IDE-start

I agree that a beginner should learn java by using the command-line initially and worry about using an IDE later once he has a basic understanding of how java works. IDEs (as you are showing) can be difficult to setup.
I personally do not use an IDE for java. I have an enhanced editor with tailorable command-line commands. I do use an IDE (Eclipse) for android.

couple of small issues in your code that need to be corrected.

Can you explain what those issues are to help the OP understand?
Just giving the OP code that can be copied and pasted will not help him learn.

Please edit your post and wrap your code with code tags:

[code]
**YOUR CODE GOES HERE**
[/code]

to get highlighting and preserve formatting.