java 代码运行异常在eclipse

package come1;
import java.util.Vector;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
public class Test1 extends JFrame{
Vector rowData,columnNames;
JTable jt=null;
JScrollPane jsp=null;

public static void main(String[] args) {
// TODO Auto-generated method stub
Test1 test1=new Test1();
}
//构造函数
public Test1()
{
columnNames=new Vector();
columnNames.add("学号");
columnNames.add("名字");
columnNames.add("性别");
columnNames.add("籍贯");
columnNames.add("系别");

rowData=new Vector();
Vector hang=new Vector();
hang.add("sp001");
hang.add("孙悟空");
hang.add("男");
hang.add("500");
hang.add("花果山");
hang.add("少令牌");
rowData.add(hang);

jt=new JTable(rowData,columnNames);
jsp=new JScrollPane(jt);
this.add(jsp);
this.setSize(400,300);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);

}

}
运行eclipse后出现报错

Exception in thread "main" java.awt.AWTError: Assistive Technology not found: com.sun.java.accessibility.AccessBridge
at java.awt.Toolkit.loadAssistiveTechnologies(Toolkit.java:773)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:859)
at java.awt.Window.getToolkit(Window.java:1167)
at java.awt.Window.init(Window.java:394)
at java.awt.Window.(Window.java:432)
at java.awt.Frame.(Frame.java:403)
at java.awt.Frame.(Frame.java:368)
at javax.swing.JFrame.(JFrame.java:163)
at come1.Test1.(Test1.java:17)
at come1.Test1.main(Test1.java:14)
求哪位大神给指点一下非常感谢