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Java programming solved programs/examples

This section contains solved java programs on all core java topics; choose categories to learn java topics through solved programs/examples with their output and explanation.

There are also Java Code Snippets linked under this section with solved programs, these code snippets are complete programs with output.

Here is the List of Java programming solved programs/examples with solutions and detailed explanation

Java programs by categories

Latest programs...

  1. Java program to remove elements from specific index from an ArrayList.
    In this program, we a going to learn to create an ArrayList, adding elements to ArrayList and removing elements from specific index.
  2. Java program to add elements in ArrayList and print them in reverse order.
    In this program, we are going to create an ArrayList, add elements in the ArrayList and print elements in reverse order.
  3. Java program to add element at specific index in ArrayList.
    In this program, we are going to learn create an ArrayList, adding elements at specific index and print them on output screen.
  4. Java program to create an ArrayList, add elements and print.
    In this java program, we are going to learn how to create an ArrayList, add elements in the ArrayList and print the elements on the output screen?
  5. Java program to read text from file from a specified index or skipping byte using FileInputStream.
    In this program, we are going to learn how to read text from a file after skipping some bytes and print them on the output screen using FileInputStream.
  6. Java program to determine number of bytes written to file using DataOutputStream.
    In this java program, we are going to learn how to get (determine) the number of bytes written to a file using DataOutputStream? Here, we will write text in file and print the number of written bytes.
  7. Java program to append text/string in a file.
    In this java program, we are going to learn how to append text/string in a given file? Here, we have a file with some pre written content and we are appending text in it.
  8. Java program to get the last modification date and time of a file.
    In this java program, we will learn how to get the file’s last modification date and time? Here, we will give a file name and program will print its last modification date and time.
  9. Java program to read characters from the file.
    In this java program, we will learn how to read characters from a file? Here, we are using ‘FileReader’ class and its method ‘read’ to read the characters from the file.
  10. Java program to read Boolean value from the file.
    In this java program, we are going to read Boolean value from the file using hasNextBoolean() method of Scanner class.
  11. Java program to rename an existing file.
    In this Java program, we are going to learn how to rename an existing file? This task can we performed using renameTo() method, which is a method of File class.
  12. Java program to write Bytes using ByteStream.
    In this program, we are going to learn to write bytes using ByteStream? To write data “byte-by-byte” in the file, we will use writeBytes() method.
  13. Java program to read an array using ByteStream.
    In this java program, we are going to learn how to read an array using ByteStream? ByteStream reads and write byte by byte data from/in a file.
  14. Java program to break a string into characters.
    In this article of java program, we will learn how to break a string into characters?
  15. Java program to count number of digits in a string.
    In this article of java program, we will learn how to count the number of digits in a string?
  16. Java program to count number of vowels in a string.
    In this article of java program, we will learn how to count the number of vowels in a string?
  17. Java program to count number of words in a sentence.
    In this article of java program, we will learn how to count the number of words in a given sentence (combination of strings)?
  18. Java program to count number of uppercase and lowercase letters in a string.
    In this Java program, we will learn how to count the number of uppercase and lowercase letters in a given string?
  19. Java program to demonstrate example of thread.
    This example is based on threading in java, here we will learn how to use thread in java?
  20. Java program to print star pattern using class.
    STAR pattern printing program in Java - This program will print the star pattern till N lines, N will be taken as input from the user.
  21. Java program to print pyramid of characters using class.
    PYRAMID of characters printing in Java - This program will print the pyramid of characters till N lines, N will be taken as input from the user.
  22. Java program to swap two integer numbers using class.
    Learn: How to read and swap integer numbers in Java language using class, that means swapping of numbers operations will be performed using class.
  23. Java program to get the IP address, Hostname based on given Hostname.
    Learn: How to get the host ip address (website ip address), host name based on given host name (website name), this program will take a host name as input and print the host name, ip address.
  24. Java program to print the hostname and IP address of Local system.
    Java program to find and print the host name, Ip address of local system. This program will print the IP address and Hostname of the system on which program will be executed.

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