Working with LinkedLists in Java: Custom toString() Method!
Hey everyone! 🎉 Today, I want to share a cool tip about using the LinkedList class in Java for better string representation.
By default, calling toString() on a LinkedList gives you a standard format. But often, we need something more customized. Here’s how you can implement your own toString() method:
1. Extend the LinkedList Class: Create a new class that inherits from LinkedList. 2. Override toString(): Customize how your list is represented as a string.
Here’s a quick example:
import java.util.LinkedList;
public class CustomLinkedList<E> extends LinkedList<E> { @Override public String toString() { StringBuilder sb = new StringBuilder("["); for (E element : this) { sb.append(element).append(", "); } if (sb.length() > 1) { sb.setLength(sb.length() - 2); // Remove last comma and space } sb.append("]"); return sb.toString(); } }
Now, when you create an instance of CustomLinkedList, you get a nicely formatted output! 🌟
This approach not only enhances readability but also makes debugging easier. Happy coding! 💻✨
Working with LinkedLists in Java: Custom toString() Method!
Hey everyone! 🎉 Today, I want to share a cool tip about using the LinkedList class in Java for better string representation.
By default, calling toString() on a LinkedList gives you a standard format. But often, we need something more customized. Here’s how you can implement your own toString() method:
1. Extend the LinkedList Class: Create a new class that inherits from LinkedList. 2. Override toString(): Customize how your list is represented as a string.
Here’s a quick example:
import java.util.LinkedList;
public class CustomLinkedList<E> extends LinkedList<E> { @Override public String toString() { StringBuilder sb = new StringBuilder("["); for (E element : this) { sb.append(element).append(", "); } if (sb.length() > 1) { sb.setLength(sb.length() - 2); // Remove last comma and space } sb.append("]"); return sb.toString(); } }
Now, when you create an instance of CustomLinkedList, you get a nicely formatted output! 🌟
This approach not only enhances readability but also makes debugging easier. Happy coding! 💻✨
BY Top Java Quiz Questions ☕️
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