Java

Linked List

• Implementing a Custom Generic Linked List in Java
• Linked List in Java
• How to sort LinkedList In Java?
• Linked List – add method in Java
• Linked List – addAll method in Java
• Linked List – addFirst and addLast methods in Java
• Linked List – clear method in Java
• Linked List- contains and containsAll methods in Java
• Linked List – descendingIterator() method in Java
• Linked List – get(), getFirst() and getLast() methods in Java
• Linked List – isEmpty() method in Java
• Linked List – offer, offerFirst, and offerLast methods in Java
• Linked List – peek, peekFirst, and peekLast methods in Java
• Linked list – remove methods in Java

Jackson Annotations

• @JsonIgnoreProperties and @JsonIgnore annotations
• @JsonPropertyOrder Jackson Annotation
• @JsonProperty Jackson Annotation
• @JsonRawValue Jackson Annotation
• @JsonValue Jackson Annotation
• @JsonAnyGetter Jackson Annotation
• @JsonAnySetter Jackson Annotation
• Java Optional with Jackson
• @JsonInclude Jackson Annotation
• @JsonFormat Jackson Annotation
• How to accept a single value as an array in JSON using Java?

Lombok

• Create custom annotation that adds a method in the same class like lombok’s

Regular Expression

• Working of general symbols in regex
• Regular Expression (Regex) – basics
• Java – Apache log file parsing

Strings

• Java String
• Java String charAt() method
• Java String compareTo() method
• Java String concat() method
• Java String contains() method
• Java String length() method
• Java String isEmpty() method
• Java String indexOf() method
• Java String trim() method
• Java String strip() method
• Java String substring() method
• Java String startsWith() method
• Java String endsWith() method 
• Java String equalsIgnoreCase() method
• Java String toCharArray() method with examples

Java ArrayList

• ArrayList in Java
• ArrayList add() method in Java
• ArrayList addAll() method in Java
• ArrayList clear() method in Java
• ArrayList contains() and ContainsAll() method in Java
• ArrayList ensureCapacity() method in Java
• ArrayList indexOf() method in Java
• ArrayList isEmpty() method in Java
• ArrayList lastIndexOf() method in Java
• ArrayList remove() method in Java
• ArrayList removeAll() method in Java
• ArrayList set() method in Java
• ArrayList size() method in Java
• ArrayList subList() method in Java
• ArrayList trimToSize() method in Java

Vector

• Vector class in Java
• Vector add() method in Java
• Vector addAll() method in Java
• Vector addElement() method in Java
• Vector capacity() method in Java
• Vector clear() method in Java
• Vector isEmpty() method in Java
• Vector trimToSize() method in Java

Jsch

• How to make an SSH connection to a secure server Using Java
• How to execute commands using Jsch in java
• Copy or transfer file from a local to the remote server using Java
• Copy a directory from the local to a remote server using Java
• Transfer files from one remote server to another using Java

OOPS concepts

• Java Classes and Objects
• Access Modifiers in Java
• Non-Access Modifiers In Java With Examples
• Object life cycle in Java
• Inheritance in Java ( Is-A relationship)
• Method Overriding in Java
• Method Overloading in Java
• Can we overload and override the main() method in Java?
• Ambiguity for the null parameter in method overloading
• equals() and hashcode() methods in Java

Wrapper classes

• Wrapper Classes in Java
• Boolean Wrapper Class in Java
• Integer Wrapper class in Java
• Long Wrapper Class in Java

Basics

How to run Java programs using the command prompt ( cmd )

Conversions

• Convert list to map
• Convert int to String
• Convert long to String
• Convert double to String
• Convert String to int
• Convert String to long
• Convert String to double
• Convert long to int
• Convert double to int