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Java for Data Science by Jennifer L. Reese, Richard M. Reese

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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 ...

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