AI代码解释 privateint bookId;privateString bookName;privateint bookPrice;@OverridepublicintcompareTo(Book o){// TODO Auto-generated method stub//return this.bookPrice-o.bookPrice;//按价格排序 升序//return o.bookPrice-this.bookPrice;//按价格排序 降序//return this.bookName.compareTo(o.bookName...
}publicPerson(String name) {this.name =name; }publicString getName() {returnname; }publicvoidsetName(String name) {this.name =name; } @OverridepublicString toString() {return"Person{" + "name='" + name + '\'' + ", age=" + age + '}'; } @OverridepublicintcompareTo(Person o) ...
();// Inserting elements in the objectslist.add(newSimpleTesting(56));list.add(newSimpleTesting(66));list.add(newSimpleTesting(21));Collections.sort(list);list.forEach(el->System.out.println(el.age));}// Overriding compareTo() method@OverridepublicintcompareTo(SimpleTesting user){return...
Learn how to use the compareTo method in Java's Date class for effective date comparisons in your applications.
Making your Java objects sortable: the compareTo methodOn the previous page, we saw that to make our objects sortable, we need to make them implement the Comparable interface. This means providing a compareTo() method that will define the order of two instances of a given object. ...
1 import java.util.Iterator; 2 import java.util.TreeSet; 3 public class StudentCode { 4 5 public static void main(String []args){ 6 //定义TreeSet对象,并赋值java存在的对象 7 TreeSet ts1=new TreeSet(); 8 ts1.add("java10"); 9 ts1.add("java01"); 10 ts1.add("java08"); 11...
In Java 5 the PriorityQueue.remove method uses the compareTo method, while in Java 6 it uses the equals method. From the JavaDoc for the compareTo method in the Comparable interface: It is strongly recommended, but not strictly required that (x.compareTo(y)==0) == (x.equals(y)). ...
Javamex: Java Tutorials Threads Concurrency Collections I/O XML/Web Math Crypto DB How to Profiling Regex UI TechniquesOptimising the compareTo method...On the previous page, we saw an example implementation of the compareTo() method of the Comparable interface. Our implementation was methodical ...
Learn how to use the compareTo method in Java to compare two strings. Understand its syntax, parameters, and practical examples.
calling Collections.sort and Collections.binarySearch calling Arrays.sort and Arrays.binarySearch using objects as keys in a TreeMap using objects as elements in a TreeSetThe compareTo method needs to satisfy the following conditions. These conditions have the goal of allowing objects to be fully so...