Java for Data Science

Creating bar charts

A bar chart uses two axes with rectangular bars that can be either positioned either vertically or horizontally. The length of a bar is proportional to the value it represents. A bar chart can be used to show time series data.

In the following series of examples, we will be using a set of European country populations for three decades, as listed in the following table. The data is a subset of population data found at https://ourworldindata.org/grapher/population-by-country?tab=data:

Country	1950	1960	1970
Belgium	8,639,369	9,118,700	9,637,800
France	42,518,000	46,584,000	51,918,000
Germany	68,374,572	72,480,869	77,783,164
Netherlands	10,113,527	11,486,000	13,032,335
Sweden	7,014,005	7,480,395	8,042,803 ...