How to find files that match a wildcard string in Java?

Try FileUtils from Apache commons-io (listFiles and iterateFiles methods): File dir = new File(“.”); FileFilter fileFilter = new WildcardFileFilter(“sample*.java”); File[] files = dir.listFiles(fileFilter); for (int i = 0; i < files.length; i++) { System.out.println(files[i]); } To solve your issue with the TestX folders, I would first iterate through the list of folders: File[] dirs = … Read more

Check if a file exists with a wildcard in a shell script [duplicate]

For Bash scripts, the most direct and performant approach is: if compgen -G “${PROJECT_DIR}/*.png” > /dev/null; then echo “pattern exists!” fi This will work very speedily even in directories with millions of files and does not involve a new subshell. Source The simplest should be to rely on ls return value (it returns non-zero when … Read more

Select all columns except one in MySQL?

Actually there is a way, you need to have permissions of course for doing this … SET @sql = CONCAT(‘SELECT ‘, (SELECT REPLACE(GROUP_CONCAT(COLUMN_NAME), ‘<columns_to_omit>,’, ”) FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = ‘<table>’ AND TABLE_SCHEMA = ‘<database>’), ‘ FROM <table>’); PREPARE stmt1 FROM @sql; EXECUTE stmt1; Replacing <table>, <database> and <columns_to_omit>

Why is using a wild card with a Java import statement bad?

The only problem with it is that it clutters your local namespace. For example, let’s say that you’re writing a Swing app, and so need java.awt.Event, and are also interfacing with the company’s calendaring system, which has com.mycompany.calendar.Event. If you import both using the wildcard method, one of these three things happens: You have an … Read more

wildcard * in CSS for classes

What you need is called attribute selector. An example, using your html structure, is the following: div[class^=”tocolor-“], div[class*=” tocolor-“] { color:red } In the place of div you can add any element or remove it altogether, and in the place of class you can add any attribute of the specified element. [class^=”tocolor-“] — starts with … Read more

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