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

Introduction

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

Prototype

@Override
public List getColumnKeys() 

Source Link

Document

Returns the column keys.

Usage

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

/**
 * Some checks for the getColumnKeys() method.
 *///from w w  w.j  a  va2  s  .  co  m
@Test
public void testGetColumnKeys() {
    DefaultCategoryDataset underlying = new DefaultCategoryDataset();
    underlying.addValue(1.0, "R1", "C1");
    underlying.addValue(2.0, "R1", "C2");
    underlying.addValue(3.0, "R1", "C3");
    underlying.addValue(4.0, "R1", "C4");
    SlidingCategoryDataset dataset = new SlidingCategoryDataset(underlying, 1, 2);
    List keys = dataset.getColumnKeys();
    assertTrue(keys.contains("C2"));
    assertTrue(keys.contains("C3"));
    assertEquals(2, keys.size());

    dataset.setFirstCategoryIndex(3);
    keys = dataset.getColumnKeys();
    assertTrue(keys.contains("C4"));
    assertEquals(1, keys.size());
}

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