Example usage for org.jfree.data.xy YIntervalSeries clear

Introduction

In this page you can find the example usage for org.jfree.data.xy YIntervalSeries clear.

Prototype

public void clear() 

Source Link

Document

Removes all data items from the series and, unless the series is already empty, sends a SeriesChangeEvent to all registered listeners.

Usage

From source file:org.jfree.data.xy.YIntervalSeriesTest.java

/**
 * Some checks for the clear() method./* www  .java 2s  .  c  o  m*/
 */
@Test
public void testClear() {
    YIntervalSeries s1 = new YIntervalSeries("S1");
    s1.addChangeListener(this);
    s1.clear();
    assertNull(this.lastEvent);
    assertTrue(s1.isEmpty());
    s1.add(1.0, 2.0, 3.0, 4.0);
    assertFalse(s1.isEmpty());
    s1.clear();
    assertNotNull(this.lastEvent);
    assertTrue(s1.isEmpty());
}

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