How can I check if a file exists?

[2005 IR Help]

By: Todd - mrtodds

How can I check if a file exists?

2004-05-17 11:44

I am trying to read in files, but some of them don't exist. I want to use a default graphic in this case. How can I check for the existence of the file before I try to display it?

 

 

 

 

By: C-Box - c-box

RE: How can I check if a file exists?

2004-05-17 12:48

You mean at RunTime or befor you load/compile/fill your report(s) ???

 

I guess you mean at runtime... then you should search for Scriptlet usage in that forum... I guess the "beforeDetail" method could work (depends in which band you've placed your image(s)) there you can change your missing image to your default image.

 

 

hth

C-Box

 

 

 

 

By: Todd - mrtodds

RE: How can I check if a file exists?

2004-05-17 18:12

Yes, at Runtime. I tried creating a scriptlet but I can't get them to compile. Not even the sample. They both keep giving me this error:

 

C:iReport-0.2.2Form_36_Signature.java:189: cannot resolve symbol symbol : class SignatureExists location: package forms value = (java.lang.Boolean)(((com.ids.ccarweb.base.forms.SignatureExists)((dori.jasper.engine.JRAbstractScriptlet)parameter_REPORT_SCRIPTLET.getValue())).isValid());

 

 

Here is my scriptlet

package com.ids.ccarweb.base.forms;

import dori.jasper.engine.*;

import java.io.File;

 

 

/**

*

*/

public abstract class SignatureExists extends JRAbstractScriptlet

{

 

 

 

/**

*

*/

public Boolean isValid(String fileName) throws JRScriptletException

{

 

Boolean status = new Boolean(false);

File myFileName = new File(fileName);

status = new Boolean(myFileName.exists());

return status;

}

 

public String returnFilename(String fileName) throws JRScriptletException

{

 

boolean status = false;

File myFileName = new File(fileName);

String defaultSignature = "c:\Development\WEB_Development\CCARWEB\ccarweb\ccarweb\forms\images\bondurantd.jpg";

status = myFileName.exists();

if (status) { return fileName; } else {return defaultSignature;}

 

}

 

 

}

 

 

How do I get these scriptlets to work?