Java All Concepts With Examples
Table of Contents
Installations / Set up:
Data types:
- All Types of Variables in Java
- [Clearly explained] int Vs Integer
- String to double and double to string in java
- Char to string in java
- All Date Type Conversions in Java with Examples
Strings:
- String is Immutable, what does it mean ?
- Why we need to override toString() in java?
- Change all words first letter to uppercase/lowercase in a string
- Java splitting based on dollar
- Split in Java Example
- Java splitting based on comma
- String Concatenation in Java
- Truncate String in Java Example
- String Reverse in Java Example
- Java Program to Change Case of a Character/String
Objects:
Dates:
Collections:
- Hashing in Java detailed explanation
- Sorting irrespective of case in java
- Finding Common values in Arraylist Java Example
- Converting Array to Arraylist in Java Example
- ArrayList to Array in Java Example
- Retrieving Hashmap value by comparing hashmap key
- Converting HashMap to ArrayList in Java Example
- HashMap with Entryset Example
- Sorting Month in Java with Set
- Month Sorting in Java using HashMap
- How to iterate Linkedhashmap in Java
- List Inside List Iteration in Java
- Arraylist iteration in java
- Array of ArrayList in Java example
- Taking only String values from ArrayList
- ArrayList Modification Java Example
- ArrayList Reverse Iteration Example
- Sorting Map keys in Java Example
- Converting String Array to Integer Array Example Java
- Compare Three List in Java Example
- List Iteration using Lambda Expression in Java 8
- Java Program to check the string word contains with map keys
- Iterator in Java with Examples
- ListIterator in Java with Examples
- What is the real meaning of overriding hashcode and equals methods in Java
- 5 Ways to Remove Null from ArrayList
AutoBoxing / Unboxing:
Multithreading:
- Sample multithreading program using Callable Interface
- Multithreading Program in Java with online shop scrap Example
- Transient in Java with example
- Multithreading is slower than Single Thread in Java ?
Differences to know:
- Difference between Iterator and ListIterator
- BigInteger Vs BigDecimal Java
- Abstract class vs Interface in Java
- Arraylist vs LinkedList Java
- Difference between concat and append in Java
- Difference between concat and + in java
- Array vs Arraylist java
- Int array vs Integer array in java
- StringBuffer Vs StringBuilder in Java
- String StringBuilder StringBuffer difference
- Difference between Equals() and ==
- Hashset Linkedhashset Treeset difference
- Difference between ArrayList and Collection
- Difference between Hashmap and Linkedhashmap in Java
- Removing some values from the List in Java Example
- 5 Must to know differences in java
Patterns / Regex:
- Java Regex Pattern to allow characters and spaces Example
- Java regex to check empty end of url
- Java Program to find two letter capital words using Regex
- Java Regex Pattern Example
- Remove all special characters except percentage (real time use case)?
Algorithms & Data structures:
- Binary Search Implementation in Java Example
- Singly Linked List Algorithm Implementation Java Example
- Java Stack Implementation Simple Example
Files:
- How to Read Excel File xlsx in Java using Apache Poi?
- How to Read CSV File in Java?
- How to Read JSON file in Java using JSON Simple Jar ?
- How to Read XML file using Java without any Extra Libs ?
- Reading JSON Response From URL in Java
- how to read csv file in java example?
- Java File Read Sample Program
- Java File Writting example
- XLSX to CSV Convert in Java
- How to read .txt file line by line in Java?
- Steps to Read/write Property File in java
- Creating Image using Java Without any Extra Libs
Exceptions:
Comparable / Comparator:
- When to use Comparable interface in Java?
- How Comparable Interface works in Java ?
- Multiple Field Sorting using Comparator
- Array sorting in Java using Comparator Interface
Database (MySQL) :
- Java With MySQL Insert Example
- Java With MySQL Select Example
- How to connect to CPanel Remote MySql in Java ?
- How to connect MongoDB with Java ?
Performance Tuning:
Interview Questions & Answers:
Certifications / Certificates:
More:
- pig latin java program
- FizzBuzz Java program
- Palindrome in Java Example
- Printing All Possible Combinations of a 3 Digit Number Java Program
- Prime Number or Not in Java Program
- Program to print pyramid numbers in java
- Virus Blood Sample Positive / Negative Predication Java Code
Utilities:
- Replace function in java
- URLEncoder with sample program
- Java URLDecoder sample program
- Extracting .java from .jar and .class
- Converting Numbers to Words in Java
- copyright character in java sample program
- Java program to calcuate EMI
- Executing java inside java example program
- Displaying Tamil Characters in java console(Eclipse)
- Sending Mail From Java
- How to Send SMS in Java using Third Party SMS API’s
- Money Change Program in Java Example
- Finding difference in java example:
- PNR Live Status using Java