Introduction

Java Basic Exercises

Here are some basic Java exercises to get you started:

1. Hello World: Write a program to print “Hello, World!” to the console.
2. Variables: Declare and initialize different data types such as integers, floats, and strings. Print the values to the console.
3. Arithmetic: Write a program to perform basic arithmetic operations such as addition, subtraction, multiplication, and division.
4. Conditional Statements: Write a program to use if-else statements to check if a number is positive, negative, or zero.
5. Loops: Write a program to use for loops and while loops to print the numbers from 1 to 10, and to calculate the sum of numbers from 1 to 100.
6. Arrays: Create and manipulate arrays, and perform operations such as sorting and searching.
7. Functions: Write a function to calculate the factorial of a number, and to find the largest and smallest numbers in an array.
8. Objects and Classes: Write a program to demonstrate the use of objects and classes, including constructors and methods.
9. Inheritance: Write a program to demonstrate the use of inheritance and polymorphism.
10. Input/Output: Write a program to read data from the console, write data to the console, and read/write data from/to a file.

These exercises will help you build a foundation in Java programming, and prepare you for more complex object-oriented programming tasks.

Java Advance Exercises

Here are some advanced Java exercises to challenge your skills:

1. Multithreading: Write a program to demonstrate the use of multithreading and synchronization.
2. Collection Framework: Use the Java Collection Framework to perform tasks such as sorting, searching, and manipulating lists, sets, and maps.
3. Generics: Write a program to demonstrate the use of generics and type parameters.
4. Lambda Expressions: Use lambda expressions to write concise and functional code, and to perform operations such as filtering, mapping, and reducing.
5. Stream API: Use the Java Stream API to perform tasks such as filtering, mapping, reducing, and aggregating.
6. Networking: Write a program to demonstrate the use of sockets and protocols, and to implement a simple client-server application.
7. JDBC: Use the Java Database Connectivity (JDBC) API to perform database operations, such as connecting to a database, executing SQL statements, and retrieving data.
8. Servlets and JSP: Write a program to demonstrate the use of servlets and JavaServer Pages (JSP) to create dynamic web applications.
9. JavaFX: Use JavaFX to create graphical user interfaces (GUIs), and to perform tasks such as drawing shapes, handling events, and animating objects.
10. RESTful Web Services: Write a program to demonstrate the use of RESTful web services, and to create a simple REST API that performs CRUD operations.

These exercises will help you gain a deeper understanding of Java programming and software development, and prepare you for complex and challenging projects.