Java Help

Core Java

• abstract Keyword
• Final Keyword
• Volatile Keyword
• Transient Keyword
• Singleton
• Exception
• Association,Aggregation & Composition
• Java Serialization
• String in Java
• User defined Exceptions
• Constructor in Abstract Class
• Comparable and Comparator Interfaces
• Pass-by-value Concept
• Auto Boxing and Unboxing
• 'super' and 'this' keywords in java
• static import in java
• Multiple Inheritance in java
• main method in java
• Static and non-static(instance) members in Java
• ClassNotFoundException vs NoClassDefFoundError
• Overriding equals and hashCode in Java
• "implements Runnable" vs. "extends Thread"

JAVA 7 Features

• type-inference-for-generic-instance
• Rethrowing Exceptions with More Inclusive Type Checking
• Handling More Than One Type of Exception
• try-with-resource / AMD
• binary literals
• strings in switch statements
• new useful class in JAVA 7

Useful Programs

• Convert string array to arraylist
• Finding execution time for particular statement/method in java
• How do iterate over each Entry in a Map?

Wicket

• Handling GET and POST request in wicket
• Adding a JavaScript to submit button in wicket
• Adding a JavaScript to the onload event in wicket
• Adding Ajax Behavior for Generate PDF in Apache wicket

Others

• Selenium Test Help
• Eclipse Shortcuts
• Setting up SSL (https) on Tomcat
• Redirecting HTTP to HTTPS(SSL) in Tomcat
• DATE and TIME
• Copy/Paste content from Remote desktop to local desktop
• Installing apace in Unix