int m=0;//用來確定是否要添加
      if(e.getSource()==button1)
      {
      	     int a=0;
   	   	     try
      	      {
      	   	  	String cname,ename;
		        String s=text1.getText();
		        con=DriverManager.getConnection("jdbc:odbc:fsb","c","c");
		        ResultSet rs=st.executeQuery("SELECT * FROM biao ");
		        {
		       	   while(rs.next()==true)
		              {
			             ename=rs.getString("xh");
			             cname=rs.getString("xm");
			             if(ename.equals(text1.getText())||cname.equals(tex1.getText()))
			              {
			              	  a=1;
				              int h=JOptionPane.showConfirmDialog(this,"對(duì)不起 ,你要添加的單詞已存在",
				                                                "",JOptionPane.WARNING_MESSAGE);
				              if(h==JOptionPane.YES_OPTION||h==JOptionPane.CANCEL_OPTION)
				              { 
				                text1.setText("");
				                tex1.setText("");
				              }
		                  }
		                 else if(ename.equals(text1.getText())==false||cname.equals(tex1.getText())==false)
		                  {  a=0;}
		               }
		            if(a==0)
		             {
		            	int n=JOptionPane.showConfirmDialog(this,"確認(rèn)要添加嗎?",
		            	                                    "確認(rèn)對(duì)話框",JOptionPane.YES_NO_OPTION);
   	                     {
   	  	                    {
   	  	                    	if(n==JOptionPane.YES_OPTION);//如果m=1，則執(zhí)行添加
   	                             {  m=1;  }	 
   	                            if(n==JOptionPane.NO_OPTION)//如果m=0，取消添加，返回界面
   	                             {  m=0;}	   
   	                         }
   	                        if(m==1)
   	                         {
		            	         try{ 
   	   	                                tianjia();   
   	   	                            }
   	   	                         catch(SQLException ee){}
   	   	                     }
   	   	                    
		                 }
	                 }
	                if(a==1)
   	   	                    {
   	   	                    	text1.setText("");
   	   	                        tex1.setText("");
   	   	                    }
	               con.close();
      	   }
      	  
   	   	      	   
   	      }
   	      catch(SQLException ee){}
   	   	     
   	  
   	   
   	 }