Properties file issue

[Keerthi Chandhu]

Hi,

I am trying to modify a .properties file in a jsp screen and save the modified content in the properties file.

my file data looks like this
Before modification

Key1=value1
key2 = value2
###comments#####

After modification
ey1=value1 //missing first letter while saving
key2 = null // saving null value due to having space between "=" sign
###comments#####

I am having two issues while saving:
(i) If there is space between "=" sign like Key2 = value2 then it is saving as null value like this key2 = null
(ii) If the charAT(0) is not space or # at the starting line of my property file then it is saving that property missing first letter of the key.


Could anyone suggest how to make this work properly?


Thank you

[Ernest Friedman-Hill]

Well... how are you doing it now? The Properties class has decent read/write routines of its own; are you using these?

[Keerthi Chandhu]

Hi,

Yes, I am using the following method to write into properties file.Properties props = new Properties();

FileOutputStream fo = null;
		try { 
		fo = new FileOutputStream("Filename.properties"); //localdest properties file(each time from jsp properties are saved in  this file and then this file is passes to the remote server) 
		props.store(fo, "Filename.properties");    

but as we know we can't retain comments.To save comments I am using some logic

if(line.trim().length() == 0){ 
propertiesFilewriter.write(line); 

} 
else 
{ 
line = line.trim(); 
if(line.charAt(0) == '#'){ 
propertiesFilewriter.write(line); 

and I am facing the above issues as I mentioned in my previous message.

(i) If there is space between "=" sign like Key2 = value2 then it is saving as null value like this key2 = null
(ii) If the charAT(0) is not space or # at the starting line of my property file then it is saving that property missing first letter of the key.

Could anyone suggest me how to make this work properly?



Thank you