Java: Data Science Made Easy

Using country as the category

The elements of the bar chart are set up in the simpleBarChartByCountry method. The title of the chart is set and a BarChart class instance is created using the two axes. The chart, its X axis, and its Y axis also have labels that are initialized here:

public void simpleBarChartByCountry(Stage stage) {     stage.setTitle("Bar Chart");     final BarChart<String, Number> barChart                 = new BarChart<>(xAxis, yAxis);     barChart.setTitle("Country Summary");     xAxis.setLabel("Country");     yAxis.setLabel("Population");     ... } 

Next, the first three series are initialized with a name, and then the country and population data for that series. A helper method, addDataItem, as introduced in the previous section, is used to add the ...