Exception in thread "main" java.lang.NoSuchMethodError: calculateSecurityWarningPosition
2011-12-29 16:58
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Exception in thread "main" java.lang.NoSuchMethodError: calculateSecurityWarningPosition at java.awt.Window.initIDs(Native Method) at java.awt.Window.<clinit>(Window.java:286) at sun.misc.Unsafe.ensureClassInitialized(Native Method) at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAccessorFactory.java:25) at sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory.java:122) at java.lang.reflect.Field.acquireFieldAccessor(Field.java:918) at java.lang.reflect.Field.getFieldAccessor(Field.java:899) at java.lang.reflect.Field.get(Field.java:358) at sun.awt.SunToolkit$6.run(SunToolkit.java:1315) at java.security.AccessController.doPrivileged(Native Method) at sun.awt.SunToolkit.<clinit>(SunToolkit.java:1309) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:169) at java.awt.Toolkit$2.run(Toolkit.java:834) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:826) at javax.swing.UIManager.<clinit>(UIManager.java:388) at org.jfree.chart.JFreeChart.<clinit>(JFreeChart.java:250) at org.jfree.chart.ChartFactory.createBarChart(ChartFactory.java:622) at cn.com.bi.util.JfreeChartUtil.NoteChart(JfreeChartUtil.java:21) at cn.com.bi.util.JfreeChartUtil.main(JfreeChartUtil.java:49)
这段代码哪错了
import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartUtilities; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PlotOrientation; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; public class JfreeChartUtil { /** * */ private static final long serialVersionUID = 1L; public static void NoteChart(){ CategoryDataset dataset =getDataset(); JFreeChart chart = ChartFactory.createBarChart("即时在线","时间", "人数", dataset,PlotOrientation.HORIZONTAL, false, false, false); // JFreeChart chart = ChartFactory.createBarChart3D // ("即时在线", "时间", "人数", dataset, PlotOrientation.VERTICAL, true, true, true); FileOutputStream foStream=null; try { foStream= new FileOutputStream("d://ssf.jpg"); ChartUtilities.writeChartAsJPEG(foStream,100, chart, 400, 300); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }finally{ try { foStream.close(); } catch (IOException e) { e.printStackTrace(); } } } public static CategoryDataset getDataset(){ DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(100, "时间间隔", "周一"); dataset.addValue(100, "时间间隔", "周二"); dataset.addValue(100, "时间间隔", "周三"); dataset.addValue(100, "时间间隔","周四"); return dataset; } public static void main(String[] args) { NoteChart(); } }
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