CODEWITHSUNDEEP
javafileinput
Arghya Chakraborty
Arghya Chakraborty

Reputation: 443

take input and match the corresponding file

I have 100 files named "1.exe","2.exe","3.exe",...,"100.exe" I want to take input from user as 1,2,3,... or 100 and run the corresponding exe file. For example if user inputs 45 , I will run file "45.exe" I don't want to use ifs or switches. Can anyone please help me.

Upvotes: 4

Views: 146

Answers (4)

Site Helpers
Site Helpers

Reputation: 237

Runtime.getRuntime().exec( input + ".exe" ).waitFor();

will work if you want to to wait for it.

Upvotes: 2

Andrew Rasmussen
Andrew Rasmussen

Reputation: 15099

My java is a little rusty, forgive me, but this should give you the idea:

Form a string by doing something like this:

String number = "45"; // or whatever user inputs
String suffix = ".exe";
String file = number + suffix;

Then once you have the string, use it to run a process:

Runtime rt = Runtime.getRuntime();
Process p = rt.exec(file);

And when you're done with the process, destroy it:

p.destroy();

Upvotes: 1

MrLore
MrLore

Reputation: 3780

If they're in the same folder, you can use also use java.nio.file.Paths to resolve them with:

Runtime.getRuntime().exec(Paths.get(getNumberInput() + ".exe").toString());

Upvotes: 2

halex
halex

Reputation: 16403

If the input is always equal to the filename of your exes you can do it with:

if( isInputNumberBetween1And100() )
    Runtime.getRuntime().exec( input + ".exe" );

Upvotes: 13

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