Example usage for org.jfree.data.xy XYIntervalSeries isEmpty

Introduction

In this page you can find the example usage for org.jfree.data.xy XYIntervalSeries isEmpty.

Prototype

public boolean isEmpty() 

Source Link

Document

Returns true if the series contains no data items, and false otherwise.

Usage

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

/**
 * Some checks for the clear() method./*  ww w  . j  a  v  a  2 s  .c o  m*/
 */
@Test
public void testClear() {
    XYIntervalSeries s1 = new XYIntervalSeries("S1");
    s1.addChangeListener(this);
    s1.clear();
    assertNull(this.lastEvent);
    assertTrue(s1.isEmpty());
    s1.add(1.0, 2.0, 3.0, 4.0, 5.0, 6.0);
    assertFalse(s1.isEmpty());
    s1.clear();
    assertNotNull(this.lastEvent);
    assertTrue(s1.isEmpty());
}

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