1. import java.sql.Connection;
   
2. import java.sql.DriverManager;
   
3. import java.sql.Statement;
   
4. 
   
5.   public class Test{
   
6.   public static void main(String[] args) {
   
7.           String driver="oracle.jdbc.driver.OracleDriver";
   
8.           String url="jdbc:oracle:thin:@127.0.0.1:1521:Test";
   
9.           String userName="username";
   
10.           String password="users";  
    
11.           Connection conn;
    
12.           Statement st;  
    
13.           String sql="";
    
14.   try{
    
15.           Class.forName(driver);
    
16.         conn = DriverManager.getConnection (url,userName,password);
    
17.           st = conn.createStatement();
    
18.           sql ="create table A(c1 number)";
    
19.           sql ="select * from table";
    
20.           sql = "insert into QuestionsManager.questions values('"+啊+"')";
    
21.           sql = delete from Test" +"where id in (select top 1 id from Test)
    
22.         pstmt = dbc.getConnection().prepareStatement(sql) ;
    
23.         pstmt.setString(1,"%"+cond+"%") ;
    
24.         pstmt.setString(2,"%"+cond+"%") ;
    
25.         pstmt.setString(3,"%"+cond+"%") ;
    
26.         sql = update from Test" + "where id in (select top 1 id from Test_DB)
    
27.         sql = update Test set column" + "(select column from Test where Test.column1 = Test2.column1)
    
28.         st.execute(sql);
    
29.    }catch(Exception e)
    
30.   {
    
31.         e.printStackTrace();
    
32.   }
    
33. }
    
34. }

复制代码

刚复制到eclipse里面 看了下 错误太多  引号 错误太多  你还是在eclipse看下吧
20到27都显示出错

太多错误了，就连基本的字符串都没有“”,楼主去哪copy的啊？修改完善点吧，看看有什么报错在说吧