I want to create a button that changes when the user hovers it, or clicking it. I created the following variable
Button buttonPlay = new Button();
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buttons.pack is the file generated from the libgdx texture packer, texture packer is the tool which can used to generate the texture atlas , That is multiple images you can loaded to the GUI using a single file . it also help to save some memory please refer this link`https://code.google.com/p/libgdx-texturepacker-gui/downloads/list, https://github.com/libgdx/libgdx/wiki/Texture-packer