Tree Programs in Java

Java Programming Examples - Trees

A tree is a hierarchical data structure in which data is stored in the form of nodes, which are connected by edges. Trees are non-linear data structures compared to arrays, linked lists, stacks, and queues. The most basic terms used in the tree data structure are node, root node, parent node, child node, leaf node, internal node, subtree, descendant, ancestor node, degree, and level of the node.

Types of Trees in Data Structure:

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  • General Tree
  • Binary Tree
  • Binary Search Tree
  • AVL Tree
  • B-Tree
  • Splay Tree
  • Red Black Tree
  • Treap

Advantages of Trees:

  • Tree is a hierarchical data storage system.
  • Trees provide a flexible way to move data around with minimal effort.
  • Tree reflects structural relationships in the data.
  • It allows faster insertion, deletion, and searching operations on trees.

Applications of Trees:

  • Folders and organizational structures are stored in a natural hierarchical data structure.
  • It is used to organize data for efficient insertion, deletion, and searching operations.
  • The tree data structure is also used to store data in the router’s routing tables.
  • Heap is a tree data structure implemented using arrays and used to implement priority queues.
  • Trie is a special kind of tree used to implement a dictionary.
  • B-Tree and B+Tree are tree data structures used to implement indexing in databases.

The following section contains various programs on Trees, Binary Tree, Binary Search Tree, Expression Tree, AVL Tree, Tree Traversal, and KD Trees. Each sample program includes a program description, Java code, and program output. All examples have been compiled and tested on Windows and Linux systems.

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Here is the listing of Java programming examples on Trees:

  1. Java Programs on Binary Tree
  2. Java Programs on Binary Search Tree
  3. Java Programs on Trees
  4. Java Programs on Expression Tree
  5. Java Programs on AVL Tree
  6. Java Programs on Tree Traversal
  7. Java Programs on KD Tree

1. Java Programs on Binary Tree

Program Description
Binary Tree in Java Java Program to Implement Binary Tree
AA Tree in Java Java Program to Implement AA Tree
Cartesian Tree in Java Java Program to Implement Cartesian Tree
Weight Balanced Tree in Java Java Program to Implement Weight Balanced Tree
Pagoda in Java Java Program to Implement Pagoda
Red Black Tree in Java Java Program to Implement Red Black Tree
Splay Tree in Java Java Program to Implement Splay Tree
Treap in Java Java Program to Implement Treap
Threaded Binary Tree in Java Java Program to Implement Threaded Binary Tree
Rope in Java Java Program to Implement Rope
ScapeGoat Tree in Java Java Program to Implement ScapeGoat Tree
Double Order Traversal of Binary Tree in Java Java Program to Implement Double Order Traversal of a Binary Tree
Java Program to Check if Binary Tree is Subtree of Another Tree Java Program to Check if a Binary Tree is Subtree of Another Binary Tree

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2. Java Programs on Binary Search Tree

Program Description
Binary Search Tree in Java Java Program to Implement Binary Search Tree
Self Balancing BST in Java Java Program to Implement Self Balancing Binary Search Tree
Insertion in BST in Java Java Program to Perform Insertion in Binary Search Tree
Deletion in BST in Java Java Program to Perform Deletion in Binary Search Tree
Java Program to Search an Element in BST Java Program to Search an Element in a Binary Search Tree
BST Min Element in Java Java Program to Find the Minimum Value of Binary Search Tree
Randomized BST in Java Java Program to Implement Randomized Binary Search Tree
BST Right and Left Rotation in Java Java Program to Perform Right and Left Rotation on a Binary Search Tree
Balanced Binary Tree in Java Java Program to Create a Balanced Binary Tree of the Incoming Data

3. Java Programs on Trees

Program Description
Ternary Tree in Java Java Program to Implement Ternary Tree
Ternary Search Tree in Java Java Program to Implement Ternary Search Tree
Fenwick Tree in Java Java Program to Implement Fenwick Tree
Disjoint Set Data Structure in Java Java Program to Implement Disjoint Set Data Structure
Segment Tree in Java Java Program to Implement Segment Tree
Interval Tree in Java Java Program to Implement Interval Tree
Range Tree in Java Java Program to Implement Range Tree
Binomial Tree in Java Java Program to Implement Binomial Tree
Suffix Tree in Java Java Program to Implement Suffix Tree
Print only Odd Numbered Levels of a Tree in Java Java Program to Print the Nodes at Odd Levels of a Tree
Delete a Node in Tree without Recursion in Java Java Program to Delete a Particular Node in a Tree Without Recursion
Prufer Code in Java Java Program to Create the Prufer Code for a Tree

4. Java Programs on Expression Tree

Program Description
Expression Tree in Java Java Program to Implement Expression Tree
Create Expression Tree from Infix Expression in Java Java Program to Create Expression Tree from Infix Expression

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5. Java Programs on AVL Tree

Program Description
AVL Tree in Java Java Program to Implement AVL Tree
BST is AVL Tree or Not in Java Java Program to Check if a Given Binary Tree is an AVL Tree or Not
AVL Tree Operations in Java Java Program to Perform AVL Tree Operations

6. Java Programs on Tree Traversal

Program Description
Inorder Traversal using Recursion in Java Java Program to Perform Inorder Traversal of a Binary Tree using Recursion
Inorder Traversal without Recursion in Java Java Program to Perform Inorder Traversal of a Binary Tree without using Recursion
Preorder Traversal using Recursion in Java Java Program to Perform Preorder Traversal of a Binary Tree using Recursion
Preorder Traversal without Recursion in Java Java Program to Perform Preorder Traversal of a Binary Tree without using Recursion
Postorder Traversal using Recursion in Java Java Program to Perform Postorder Traversal of a Binary Tree using Recursion
Postorder Traversal without Recursion in Java Java Program to Perform Postorder Traversal of a Binary Tree without using Recursion

7. Java Programs on KD Tree

Program Description
K-D Tree for 2 Dimensional Data in Java Java Program to Construct K-D Tree for 2 Dimensional Data
2 Dimensional K-D Tree Insertion in Java Java Program to Perform Insertion in a 2 Dimensional K-D Tree
Partial Key Search in K-D Tree in Java Java Program to Perform Partial Key Search in a K-D Tree
Searching in 2-Dimension K-D Tree in Java Java Program to Perform Searching in a 2-Dimensional K-D Tree
Find 3D Point Location using K-D Trees in Java Java Program to Find Location of a Point Placed in Three Dimensions Using K-D Trees

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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