Example usage for org.jfree.data.category DefaultIntervalCategoryDataset getColumnKeys

Introduction

In this page you can find the example usage for org.jfree.data.category DefaultIntervalCategoryDataset getColumnKeys.

Prototype

@Override
public List getColumnKeys() 

Source Link

Document

Returns a list of the categories in the dataset.

Usage

From source file:org.jfree.data.category.DefaultIntervalCategoryDatasetTest.java

/**
 * Some checks for the getColumnKeys() method.
 *///from  w  w w.  ja  v  a 2  s . c o  m
@Test
public void testGetColumnKeys() {
    // check an empty dataset
    DefaultIntervalCategoryDataset empty = new DefaultIntervalCategoryDataset(new double[0][0],
            new double[0][0]);
    List keys = empty.getColumnKeys();
    assertEquals(0, keys.size());
}

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