try 
{ 
Statement   stmt   =   connect.createStatement(); 
stmt.executeQuery( "select   count(*)   from   yourTable "); 

} 
catch(SQLException   e) 
{ 
      System.out.print( "not exits "+   e.getMessage()); 
}

------解决方案--------------------

Java code


//name 表名
 public boolean HasTable(String name) {
        //判断某一个表是否存在
        boolean result = false;
        try {
            DatabaseMetaData meta = sqlConn.getMetaData();//sqlConn 数据库连接
            ResultSet set = meta.getTables (null, null, name, null);
            while (set.next()) {
                result = true;
            }
        } catch (Exception e) {
            System.err.println(e);
            e.printStackTrace ();
        }
        return result;
    }