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Exception in thread "main" java.lang.NoSuchMethodError: calculateSecurityWarningPosition

2011-12-29 16:58 295 查看
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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