david a. questions

david a. answers

• how to Simplify List of object to another List?
• Using ServletOutputStream to write very large files in a Java servlet without memory issues
• How to find out the temp space that will be required by a sql query on a database?
• Endless loop in a servlet - recovery possible?
• Does using var with a literal result in a primitive or a primitive wrapper class?
• Thread class empty constructor
• Get time in hh:mm:ss from seconds in Java
• Websphere classloader delegation mode
• Scanner.reset() doesn't work
• Java 8 Optional: choose between two possibly null values