Author: allaboutbasic

Let us assume we have a table called “ITEM”   and it has four fields named “ order_no”, “item_no”, “qty” and  “style_sample_no” . In the field “style_sample_no” there is no data i.e.  this filed is blank/null or empty.

  Continue reading “Problem and its Solution in SQL Query: How to solve If database table field is blank or null then replace or fill it with zero (0) or one (1) without using if condition in query||Solution procedure of if field = blank or Null then field =0 or 1” →

For the reporting purpose sometimes we may need to convert xml file into jasper.

Here I have tried to show you the conversion procedure of xml file to jasper file using Java Programming Language.

To do this you need the following jar (drivers actually) files

1. jasper-compiler.jar
2. jasper-runtime.jar
3. jasper_bundle.jar

Below, I have attached the Java Source Code of XML to JASPER Converter, Code to compile and run the source code. Also I have included an Image to show you the whole procedure.

Continue reading “Java Xml file to Jasper converter : How to convert Xml file into Jasper in Java using jasper-compiler, jasper-runtime and jasper_bundle||Source code example included.” →

Have you ever faced this exception while executing sql query in  your software  or  database?? Well, I am using  Java programming language in the front end and PostGreSQL in the backend i.e. server side. Recently I have faced the following  exception which was showing actually from the database. I searched internet for the solution but didn’t get any reliable solution. But at last I have solved it and sharing the solution procedure with you. Hope it will also work with your problem

Here is the problem (Exception)

Batch entry 0 insert into endproduct_mat_req(item_no,end_product_mat_no,mat_no,qty) values(523,71,44,100000.0) was aborted.  Call getNextException to see the cause

Continue reading “Solution of Batch entry 0 insert into postgresql database table, Call getNextException to see the cause|| Learn How to solve this exception or error ||Java PostgreSQL Database Exception.” →

After a long time I am sharing a post related to Java Programming language. Recently, I have faced a problem while coding   on java HashMap key value set on my job. In my last post I have shown How to show Java HashMap Key value pair and work on it. But the problem I have faced is to convert the Key value set to Vector or String. I used two (2) integer type data, separated with colon, as the key value of my HashMap.  What I need to convert that colon separated key values to individual integer and then convert them or stored them on Vector.

Sometimes while working with software using java programming language we may face problem while working with JTable. In JTable Cell you may need to show JButton for various purposes. So, to show JButton in JTable Cell or to fill up JTable’s Column with JButton you will need to use ButtonRenderer and ButtonEditor and to add Click Event on the JButton in JTable cell you will need to add ActionListener for that JButton.

While designing or preparing  software you may face problem  to check  JTable cell is empty or not while entering JTable data in Database. Another thing may happen, suppose you are trying to validate your JTable cell empty or not but it is taking space or null entry as a string and your empty cell validation may not work. Here I am sharing you a little but useful technique by which you will be able to check your empty JTable cell and also if you enter space in the JTable cell it will catch this cell as empty and will show error. Just run the given program and check how it works.

Today I am sharing with you another important topic where I will give you an example by which you will get a clear idea about how to read or search any Bengali or Bangla font from a text pad (notepad) or file and then show it in JTextField. This code is important for those who are trying to prepare English to Bengali Dictionary. Download the reader.txt which I have used here to read Bengali (Bangla) words.