JTable Cell Empty Validation: How to check or know JTable cell is empty or not and also avoid null or space entry validation in JTable cell before saving JTable data in Database

JTable empty cell validation 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.

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