How to remove (delete) Eclipse workspace from the dropdown list.
Eclipse is my favorite Java IDE. To manage projects Eclipse uses ‘Workspaces’. Workspace is basically a folder on your disk where your project files are stored. To work on a project you load its...
View ArticleHow to search for a string in a file using Java regular expression.
If you need to search for a phrase or a string in a text file Java regular expression is the easiest way to accomplish this task. Here is a simple example that demonstrates how you can use Java...
View ArticleNew features coming to Java 7
Joseph Darcy, the lead of Project Coin, formally announced the approved changes to the Java language to be included in JDK 7. Although there was no major change announced, the announced enhancements...
View ArticleClik here to view.
How to determine smallest and largest number in Java
Numbers A couple of weeks ago a reader asked me for a Java program to read command-line input from the user and then display the smallest value the user has entered. He wanted to use digit ‘0’ to...
View ArticleBest way to check if a Java String is a number.
One of the routine tasks in many Java applications is to convert a string to a number. For instance, you may have a form where user submits his or her age. The input will come to your Java application...
View ArticleHow to write to properties file in Java
One of most visited posts on this blog is How to read properties file in Java. In that post I explained how you can read from a properties file. But many people came to that post searching for an...
View ArticleHow to validate date using Java regular expression
My earlier post on how to validate email address, SSN and phone number validation using Java regex still attracts lot of visitors. Today I realized that another piece of data that many programmers...
View ArticleHow to convert an ArrayList to array in Java
Today, I will share a very basic Java program that converts an ArrayList to array. For most Java developers this is a routine task, but many new comers to Java have asked me this question of how to...
View ArticleClik here to view.
Java String comparison. The difference between == and equals().
Many Java beginners find it difficult to differentiate between == operator and the “equals()” method when comparing String variables in Java. They assume that both operations perform the same function...
View ArticleSort numbers in Java to find minimum and maximum values without using Array
Recently a reader contacted me with a question about sorting numbers in Java. After sorting the number the program then needs to print the largest and smallest values. I have written a post earlier...
View ArticleTop 10 Eclipse Keyboard shortcuts for Java developers
Here is a list of 10 commonly used Eclipse shortcuts for Java developers. Ctrl + Shift + T: Open a type (e.g.; a class, an interface) without browsing through list of packages Ctrl + Shift + R: Open...
View ArticleHow to search for a string in a file using Java regular expression.
If you need to search for a phrase or a string in a text file Java regular expression is the easiest way to accomplish this task. Here is a simple example that demonstrates how you can use Java...
View ArticleNew features coming to Java 7
Joseph Darcy, the lead of Project Coin, formally announced the approved changes to the Java language to be included in JDK 7. Although there was no major change announced, the announced enhancements...
View ArticleClik here to view.
How to determine smallest and largest number in Java
Numbers A couple of weeks ago a reader asked me for a Java program to read command-line input from the user and then display the smallest value the user has entered. He wanted to use digit ‘0’ to...
View ArticleBest way to check if a Java String is a number.
One of the routine tasks in many Java applications is to convert a string to a number. For instance, you may have a form where user submits his or her age. The input will come to your Java application...
View ArticleHow to write to properties file in Java
One of most visited posts on this blog is How to read properties file in Java. In that post I explained how you can read from a properties file. But many people came to that post searching for an...
View ArticleHow to validate date using Java regular expression
My earlier post on how to validate email address, SSN and phone number validation using Java regex still attracts lot of visitors. Today I realized that another piece of data that many programmers...
View ArticleHow to convert an ArrayList to array in Java
Today, I will share a very basic Java program that converts an ArrayList to array. For most Java developers this is a routine task, but many new comers to Java have asked me this question of how to...
View ArticleClik here to view.
Java String comparison. The difference between == and equals().
Many Java beginners find it difficult to differentiate between == operator and the “equals()” method when comparing String variables in Java. They assume that both operations perform the same function...
View ArticleSort numbers in Java to find minimum and maximum values without using Array
Recently a reader contacted me with a question about sorting numbers in Java. After sorting the number the program then needs to print the largest and smallest values. I have written a post earlier...
View Article