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Editorial Team
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Asked: 2026-06-12T04:29:49+00:00

I have a text file which contains the follwing {sno:1c8d1d7eaa32ff3f58a8822111276d5a,at:app,tt:{AppParam1:AppParamValue1,AppParam2:AppParamValue2}},c:{dt:Microsoft XDeviceEmulator,pn:WP,pv:8.0.9832.0} In java I

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I have a text file which contains the follwing 

{"sno":"1c8d1d7eaa32ff3f58a8822111276d5a","at":"app","tt":{"AppParam1":"AppParamValue1","AppParam2":"AppParamValue2"}},"c":{"dt":"Microsoft XDeviceEmulator","pn":"WP","pv":"8.0.9832.0"}

In java I want to find ‘sno’, ‘pn’ and ‘pv’ and replace the values of (what I mean is) currently the above text file has 

"sno" has value "1c8d1d7eaa32ff3f58a8822111276d5a"
"pn" has value "WP"
"pv" has value "8.0.9832.0"

New values

"sno" has to be changed to "637829"
"pn"  has to be changed to "XYZ"
"pv" has to be changed to "2.2.4.0"

Your help is much appreciated !
Thanks

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1 Answer

  1. Editorial Team

    You can convert it into JSON, make you changes and then convert it back to string.
    Or if you really want to replace these values by yourself, you can use these lines : 

    yourstring = yourstring.replaceFirst("\"sno\":\"[^\"]+\"", "\"sno\":\"637829\"");
yourstring = yourstring.replaceFirst("\"pn\":\"[^\"]+\"", "\"pn\":\"XYZ\"");
yourstring = yourstring.replaceFirst("\"pv\":\"[^\"]+\"", "\"pv\":\"2.2.4.0\"");

    Only if there are no way theses key can be found elsewhere in the string

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