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Commit ff49a94

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add more core java concepts
1 parent 8c399aa commit ff49a94

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‎.idea/.gitignore

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‎.idea/.name

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‎.idea/Java Problems and Solves.iml

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‎.idea/misc.xml

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‎.idea/modules.xml

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‎.idea/runConfigurations/Java_Problems_and_Solves.xml

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‎.idea/vcs.xml

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package ComparableAndComparator;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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public class Book implements Comparable<Book> {
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private String title;
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private String author;
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private int price;
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public String getTitle() {
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return title;
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}
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public Book(String title, String author, int price) {
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this.title = title;
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this.author = author;
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this.price = price;
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}
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@Override
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public int compareTo(Book o) {
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return price - (o.price);
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}
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@Override
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public String toString() {
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return "Book{" +
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"title='" + title + '\'' +
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'}';
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}
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public static void main(String[] args) {
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Book b1 = new Book("Java", "a", 200);
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Book b2 = new Book("Python", "b", 150);
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List<Book> booklist = new ArrayList<>();
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booklist.add(b1);
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booklist.add(b2);
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//Collections.sort(booklist);
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Collections.sort(booklist, new TitleComparator());
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System.out.println(Collections.binarySearch(booklist, b1));
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System.out.println(booklist);
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}
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}
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package ComparableAndComparator;
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import java.util.Comparator;
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public class TitleComparator implements Comparator<Book> {
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@Override
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public int compare(Book o1, Book o2) {
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return o1.getTitle().compareTo(o2.getTitle());
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}
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}

‎More Core Java Concepts to Know/Core Java Questions.txt

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