Help to create a webgis raster-java

Hi, I'm trying to create a web gis in java for my first time and I'v a lot of problems.
Can anyone help me? I searched en example for raster viewer or webgis, in java, with rasters opensource, but nothing, I haven't find it. I search this programs for see how muss I export the raster and how can I show the images on the web or in a java program with their georeferences.

Hi, I'm trying to create a web gis in java for my first time and I'v a lot of problems.
Can anyone help me? I searched en example for raster viewer or webgis, in java, with rasters opensource, but nothing, I haven't find it. I search this programs for see how muss I export the raster and how can I show the images on the web or in a java program with their georeferences.

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