本文整理汇总了Java中org.jfree.data.KeyedObjects.sortByKeys方法的典型用法代码示例。如果您正苦于以下问题：Java KeyedObjects.sortByKeys方法的具体用法？Java KeyedObjects.sortByKeys怎么用？Java KeyedObjects.sortByKeys使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.jfree.data.KeyedObjects的用法示例。
在下文中一共展示了KeyedObjects.sortByKeys方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testSortByKeyAscending
import org.jfree.data.KeyedObjects; //导入方法依赖的package包/类
/**
* Tests sorting of data by key (ascending).
*/
public void testSortByKeyAscending() {
KeyedObjects data = new KeyedObjects();
data.addObject("C", new Double(1.0));
data.addObject("B", null);
data.addObject("D", new Double(3.0));
data.addObject("A", new Double(2.0));
data.sortByKeys(SortOrder.ASCENDING);
// check key order
assertEquals("A", data.getKey(0));
assertEquals("B", data.getKey(1));
assertEquals("C", data.getKey(2));
assertEquals("D", data.getKey(3));
// check retrieve value by key
assertEquals(data.getObject("A"), new Double(2.0));
assertEquals(data.getObject("B"), null);
assertEquals(data.getObject("C"), new Double(1.0));
assertEquals(data.getObject("D"), new Double(3.0));
// check retrieve value by index
assertEquals(data.getObject(0), new Double(2.0));
assertEquals(data.getObject(1), null);
assertEquals(data.getObject(2), new Double(1.0));
assertEquals(data.getObject(3), new Double(3.0));
}
示例2: testSortByKeyDescending
import org.jfree.data.KeyedObjects; //导入方法依赖的package包/类
/**
* Tests sorting of data by key (descending).
*/
public void testSortByKeyDescending() {
KeyedObjects data = new KeyedObjects();
data.addObject("C", new Double(1.0));
data.addObject("B", null);
data.addObject("D", new Double(3.0));
data.addObject("A", new Double(2.0));
data.sortByKeys(SortOrder.DESCENDING);
// check key order
assertEquals(data.getKey(0), "D");
assertEquals(data.getKey(1), "C");
assertEquals(data.getKey(2), "B");
assertEquals(data.getKey(3), "A");
// check retrieve value by key
assertEquals(data.getObject("A"), new Double(2.0));
assertEquals(data.getObject("B"), null);
assertEquals(data.getObject("C"), new Double(1.0));
assertEquals(data.getObject("D"), new Double(3.0));
// check retrieve value by index
assertEquals(data.getObject(0), new Double(3.0));
assertEquals(data.getObject(1), new Double(1.0));
assertEquals(data.getObject(2), null);
assertEquals(data.getObject(3), new Double(2.0));
}