pack(): This method invokes the layout manager.
centerFrameOnScreen(): This method is used for the position of the frame in the middle of the screen.
setVisible(): This method is used for display frame on the screen.
createCategoryDataset(): This method is used to create the instance of CategoryDataset Interface and that contains a copy of the data in an array.
createPolarChart(): This method is used to create bar chart for given values. It takes title, dataset, legend, tool tips and urls as parameters.
saveChartAsPNG(): This method is used to save chart in to png format.
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