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How to create a Jar file with execution options?

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0

How can I create a jar file with execution options, for example, the idea is execute the command:

java -jar MyProgram.jar -M someFile.txt

or

java -jar MyProgram.jar -cp someFile.txt

So the -M option defines a particular method to process the file someFile.txt and with -cp defines another behavior for the code.

With this in mine, how can I get this result from my code, is there something I need to write in the Main class, or how can I define such behavior?

java linux command-line jar executable-jar

share|improve this question

asked Mar 8 at 17:42

EEsparaquiaEEsparaquia

386

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Have you thought about using the args in public static void main(String[] args) for that?
  
  – deHaar
  Mar 8 at 17:44
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  For that case, I should define two arguments for the code, one for the function I need to choose cp or M and the input file, and catch them using an if statement on the main class?
  
  – EEsparaquia
  Mar 8 at 17:48
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Yes, exactly... That should be the choice in your case, I think.
  
  – deHaar
  Mar 8 at 17:49
  

  
  
  
  

add a comment | 

0

How can I create a jar file with execution options, for example, the idea is execute the command:

java -jar MyProgram.jar -M someFile.txt

or

java -jar MyProgram.jar -cp someFile.txt

So the -M option defines a particular method to process the file someFile.txt and with -cp defines another behavior for the code.

With this in mine, how can I get this result from my code, is there something I need to write in the Main class, or how can I define such behavior?

java linux command-line jar executable-jar

share|improve this question

asked Mar 8 at 17:42

EEsparaquiaEEsparaquia

386

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Have you thought about using the args in public static void main(String[] args) for that?
  
  – deHaar
  Mar 8 at 17:44
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  For that case, I should define two arguments for the code, one for the function I need to choose cp or M and the input file, and catch them using an if statement on the main class?
  
  – EEsparaquia
  Mar 8 at 17:48
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Yes, exactly... That should be the choice in your case, I think.
  
  – deHaar
  Mar 8 at 17:49
  

  
  
  
  

add a comment | 

How can I create a jar file with execution options, for example, the idea is execute the command:

java -jar MyProgram.jar -M someFile.txt

or

java -jar MyProgram.jar -cp someFile.txt

So the -M option defines a particular method to process the file someFile.txt and with -cp defines another behavior for the code.

With this in mine, how can I get this result from my code, is there something I need to write in the Main class, or how can I define such behavior?

java linux command-line jar executable-jar

share|improve this question

asked Mar 8 at 17:42

EEsparaquiaEEsparaquia

386

java -jar MyProgram.jar -M someFile.txt

java -jar MyProgram.jar -cp someFile.txt

share|improve this question

asked Mar 8 at 17:42

EEsparaquiaEEsparaquia

386

share|improve this question

asked Mar 8 at 17:42

EEsparaquiaEEsparaquia

386

asked Mar 8 at 17:42

EEsparaquiaEEsparaquia

386

asked Mar 8 at 17:42

EEsparaquiaEEsparaquia

386

2 Answers
2

active

oldest

votes

1

I think you probably need to check the Apache Commons-CLI, it allows you to do the things you describe above, also I give an example how it works, it give the way to specify a message for the usage of the arguments:

https://commons.apache.org/proper/commons-cli/introduction.html

 Options options = new Options();

 options.addOption( "M", false,"Merge files request.")
 .addOption("CP", false,"Copy files from file.");

 CommandLineParser parser = new DefaultParser();
 try {

 CommandLine cmd = parser.parse(options, args);
 if (!cmd.hasOption("M")) 
 throw new IllegalArgumentException("Must specify an input file.");
 
 // Do something

 if (!cmd.hasOption("CP")) 
 throw new IllegalArgumentException("Must specify an input file.");
 

 // Do something

 catch (Exception e) 
 System.out.println(e.getMEssage());
 

share|improve this answer

answered Mar 20 at 8:24

EEstereoEEstereo

665

add a comment | 

0

take a look at this example.

basically the args
in your main method

public static void main(String[] args) ... 

args = the arguments you put after java -jar MyJar.jar
for example -cp someFile.txt
as a String[]: "-cp", "someFile.txt"

share|improve this answer

answered Mar 8 at 17:56

KeanuQKeanuQ

212

add a comment | 

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1

I think you probably need to check the Apache Commons-CLI, it allows you to do the things you describe above, also I give an example how it works, it give the way to specify a message for the usage of the arguments:

https://commons.apache.org/proper/commons-cli/introduction.html

 Options options = new Options();

 options.addOption( "M", false,"Merge files request.")
 .addOption("CP", false,"Copy files from file.");

 CommandLineParser parser = new DefaultParser();
 try {

 CommandLine cmd = parser.parse(options, args);
 if (!cmd.hasOption("M")) 
 throw new IllegalArgumentException("Must specify an input file.");
 
 // Do something

 if (!cmd.hasOption("CP")) 
 throw new IllegalArgumentException("Must specify an input file.");
 

 // Do something

 catch (Exception e) 
 System.out.println(e.getMEssage());
 

share|improve this answer

answered Mar 20 at 8:24

EEstereoEEstereo

665

add a comment | 

1

I think you probably need to check the Apache Commons-CLI, it allows you to do the things you describe above, also I give an example how it works, it give the way to specify a message for the usage of the arguments:

https://commons.apache.org/proper/commons-cli/introduction.html

 Options options = new Options();

 options.addOption( "M", false,"Merge files request.")
 .addOption("CP", false,"Copy files from file.");

 CommandLineParser parser = new DefaultParser();
 try {

 CommandLine cmd = parser.parse(options, args);
 if (!cmd.hasOption("M")) 
 throw new IllegalArgumentException("Must specify an input file.");
 
 // Do something

 if (!cmd.hasOption("CP")) 
 throw new IllegalArgumentException("Must specify an input file.");
 

 // Do something

 catch (Exception e) 
 System.out.println(e.getMEssage());
 

share|improve this answer

answered Mar 20 at 8:24

EEstereoEEstereo

665

add a comment | 

I think you probably need to check the Apache Commons-CLI, it allows you to do the things you describe above, also I give an example how it works, it give the way to specify a message for the usage of the arguments:

https://commons.apache.org/proper/commons-cli/introduction.html

 Options options = new Options();

 options.addOption( "M", false,"Merge files request.")
 .addOption("CP", false,"Copy files from file.");

 CommandLineParser parser = new DefaultParser();
 try {

 CommandLine cmd = parser.parse(options, args);
 if (!cmd.hasOption("M")) 
 throw new IllegalArgumentException("Must specify an input file.");
 
 // Do something

 if (!cmd.hasOption("CP")) 
 throw new IllegalArgumentException("Must specify an input file.");
 

 // Do something

 catch (Exception e) 
 System.out.println(e.getMEssage());
 

share|improve this answer

answered Mar 20 at 8:24

EEstereoEEstereo

665

 Options options = new Options();

 options.addOption( "M", false,"Merge files request.")
 .addOption("CP", false,"Copy files from file.");

 CommandLineParser parser = new DefaultParser();
 try {

 CommandLine cmd = parser.parse(options, args);
 if (!cmd.hasOption("M")) 
 throw new IllegalArgumentException("Must specify an input file.");
 
 // Do something

 if (!cmd.hasOption("CP")) 
 throw new IllegalArgumentException("Must specify an input file.");
 

 // Do something

 catch (Exception e) 
 System.out.println(e.getMEssage());
 

share|improve this answer

answered Mar 20 at 8:24

EEstereoEEstereo

665

answered Mar 20 at 8:24

EEstereoEEstereo

665

answered Mar 20 at 8:24

EEstereoEEstereo

665

0

take a look at this example.

basically the args
in your main method

public static void main(String[] args) ... 

args = the arguments you put after java -jar MyJar.jar
for example -cp someFile.txt
as a String[]: "-cp", "someFile.txt"

share|improve this answer

answered Mar 8 at 17:56

KeanuQKeanuQ

212

add a comment | 

0

take a look at this example.

basically the args
in your main method

public static void main(String[] args) ... 

args = the arguments you put after java -jar MyJar.jar
for example -cp someFile.txt
as a String[]: "-cp", "someFile.txt"

share|improve this answer

answered Mar 8 at 17:56

KeanuQKeanuQ

212

add a comment | 

take a look at this example.

basically the args
in your main method

public static void main(String[] args) ... 

args = the arguments you put after java -jar MyJar.jar
for example -cp someFile.txt
as a String[]: "-cp", "someFile.txt"

share|improve this answer

answered Mar 8 at 17:56

KeanuQKeanuQ

212

public static void main(String[] args) ... 

share|improve this answer

answered Mar 8 at 17:56

KeanuQKeanuQ

212

answered Mar 8 at 17:56

KeanuQKeanuQ

212

answered Mar 8 at 17:56

KeanuQKeanuQ

212