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22 Posted Topics
 | I have 3 tables . the tables are connected with Foreign keys I want to delete some records but as they are interconnected by foreign keys i have to delete all of the dependencies. how to do this? |
| | Hello, I am using a Jtable in my application.I am entering values in last column of that table.Below the table, i have a Jbutton named as 'Save'.Suppose while clicking on 'Save', the entire row remains selected except the last cell in which I have entered the value.Then if I retrieve …  |
| | hello, I am using byte array to store values in it & then i am storing that byte array into database using [code] st.setBytes(1,myBytearray); [/code] while retreiving values it works fine if last byte value is not zero. But if it is zero, i think,last value is not getting saved …  |
| | Hello, I want to check uniqueness of id at the time of entry only.And I want to give message to the user at that time only.How to do this? |
| | Hi!! I have created JTable with fixed no of rows and columns.Then depending upon some conditions I want to hide one column,but the methods removeColumn or setting maxWidth to 0 are not working.I am not getting any error. How can I do this? |
| | [code] stm =con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE); rs=stm.executeQuery(qry); rs.last(); String s=rs.getString(1); [/code] I have backend as sybase. But above code is throwing an error as follows: [code] Error [Sybase][ODBC Driver][Adaptive Server Enterprise]HEADERFORMAT1 not found. Specify owner.objectname or use sp_help to check whether the object exists (sp_help may produce lots of output) [/code] |
| | I want to connect to sybase from java using jdbc:odbc bridge.. Which driver should I use like I have used "ODBC for Oracle" Plz help.. |
| | We want to write byte array to a file.The code given below works correctly for only one byte array.When we try to write more than one byte array,the previous byte array gets overwritten. How can we achieve this? [code] import java.io.*; import java.nio.*; import java.util.logging.FileHandler; import java.util.logging.Level; import java.util.logging.Logger; import …  |
| | We have 3 classes.In first class,we have a content pane and we have created object of second class on it.In second class,we have added a few textfields.We want that all these textfields of second class should be visible in third class.Third class also has its own GUI components(textfields). But the …  |
| | Hi!! I want to insert byte array in database schema as follows: table message { msgid number(5), messagevalue BLOB }; I have done this in following way But I am getting NULL pointer exception. //byte[] msgval .. contains byte values like 49 50 53 etc. Blob msg; msg.setBytes(1,msgval); // for … |
| | In following code ,I have initialized column to empty blob. But when I try to retrieve the blob,i get an exception.Can anybody help me out?? _____________________________________________________ [code] import java.sql.*; class test { public static void main(String[] args) { try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection conn= DriverManager.getConnection ("jdbc:odbc:dixit","scott","tiger"); PreparedStatement st=conn.prepareStatement("insert into survey values … |
| | I have byte array that contains (49 50 58 57 57). I'm storing this byte array in blob by using setBytes() method of preparedStatement. But in database,it is stored in different manner i.e, 31323A3939. When I try to retrieve value of this blob using getBytes() method, I'm getting output as … |
| | I have a byte array has follows: 0 6 -56 28 How can I get its integer value by doing a manual calculation? |
| | Hello!! I have a ByteBuffer & I want to send it on tcp or udp connection. How can I do this? |
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| | Can anyone give me code for conversion of IEEE-754 representation of binary float to decimal number? |
| | I have a string as follows: 'mnp1011000jie' I want to retrieve contents of the string as follows: 1st field: mnp 2nd field: 101 (which signifies the binary representation of 5) 3rd field: 1000 (which signifies the binary representation of 8) 4th field: jie I know that binary integer requires 4 … |
| | How can i convert float or double to binary? |
| | Suppose i have a string which contains some binary data as follows: "bac01010111pqr14 " how can i retrieve binary data from this string using java? |
| | i want to write a code for big endian and little endian represntation of message.The msg is trading message.How can i do it with core java? also how can i check data type validity of input given by user and data type is also provided by user. Both Data type … |
| | Does SQL support ASCII data type?Or we need to do some type casting for it.? |
| | Hi!! We are planning to do r project in c++. Is there any good library available for creating GUI in c++?  |
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