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

Introduction

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

Prototype

@Override
public int getColumnCount() 

Source Link

Document

Returns the number of columns in the table.

Usage

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

/**
 * Some checks for the getColumnCount() method.
 *///from w w w  .  j  a v a  2  s.  co  m
@Test
public void testGetColumnCount() {
    DefaultCategoryDataset underlying = new DefaultCategoryDataset();
    SlidingCategoryDataset dataset = new SlidingCategoryDataset(underlying, 10, 2);
    assertEquals(0, dataset.getColumnCount());
    underlying.addValue(1.0, "R1", "C1");
    assertEquals(0, dataset.getColumnCount());
    underlying.addValue(1.0, "R1", "C2");
    assertEquals(0, dataset.getColumnCount());
    dataset.setFirstCategoryIndex(0);
    assertEquals(2, dataset.getColumnCount());
    underlying.addValue(1.0, "R1", "C3");
    assertEquals(2, dataset.getColumnCount());
    dataset.setFirstCategoryIndex(2);
    assertEquals(1, dataset.getColumnCount());
    underlying.clear();
    assertEquals(0, dataset.getColumnCount());
}

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