Sunny Gupta questions

• Having more than 50 column in a SQL table
• How String Literal Pool Works
• Exception Handling in case of Thread.sleep and wait() method in case of Threads
• Java EE and Java SE classloading
• java.text.SimpleDateFormat not thread safe
• Lock wait timeout exceeded; try restarting transaction using JDBC
• Making a class singleton without using static method
• Difference between CXF and JAX-WS
• Apache Log4j Logging with specific timezone
• Header Tag in XML using JAXB

Sunny Gupta answers