*@comment*@update*/publicclassPersonimplementsComparable<Person> {privatelongid;privateString name;privateintage;privateString email;privateString address;publicPerson(longid, String name,intage, String email, String address){super();this.id = id;this.name = name;this.age = age;this.email = email...
public class Test { public static void main(String[] args) { Person xiaoming = new Person(20, "小明"); Person xiaohua = new Person(18, "小华"); ArrayList<Person> objects = new ArrayList<>(); objects.add(xiaoming); objects.add(xiaohua); objects.sort(new PersonalComparator()); for (...
public int compare(Object a, Object b) { String aStr, bStr; aStr = (String) a; bStr = (String) b; /* compareTo(String anotherString)Compares two strings * lexicographically. The comparison is based on the Unicode value of * each character in the strings. The character sequence represente...
For example, to sort a collection ofStringbased on the length and then case-insensitive natural ordering, the comparator can be composed using following code, Comparator<String> cmp = Comparator.comparingInt(String::length) .thenComparing(String.CASE_INSENSITIVE_ORDER); ...
String[] oldSortedNames =new String[fileNames.length]; for (int i =0; i < fileNames.length; i++) { chFileNames[i] = fileNames[i].toCharArray(); oldSortedNames[i] = fileNames[i]; } // Arrays.sort(fileNames, StrLogicCmp); ...
/***作者:魏宝航*2020年11月24日,上午20:30*/import java.util.ArrayList;import java.util.Collections;import java.util.Iterator;import java.util.List;import java.util.Scanner;public class Java比较器 {public static void main(String[] args) {Scanner sc = new Scanner(System.in);int n = sc.ne...
List<String> strList = Arrays.asList("Java", "Stream", "API");strList.stream() .map(String::toLowerCase) .forEach(System.out::println); 1. 2. 3. 以上代码中,首先从字符串列表中创建一个Stream,然后对每个字符串执行String::toLowerCase方法,即将字符串转换为小写字母,最后通过forEach()方法对...
list.forEach(order -> System.out.println(order)); } }classOrderimplementsComparable<Order>{publicString orderNo;publicintvalue;publicintcompareTo(Order o1){returnorderNo.compareTo(o1.orderNo); }publicOrder(String orderNo,intvalue){super();this.orderNo = orderNo;this.value = value; ...
staticComparatorvalueOf(Stringname) Returns the enum constant of this type with the specified name. staticComparator[]values() Returns an array containing the constants of this enum type, in the order they are declared. Methods inherited from class java.lang.Enum ...
list.forEach(order -> System.out.println(order)); } }classOrderimplementsComparable<Order>{publicString orderNo;publicdoublevalue;publicintcompareTo(Order o1){returnorderNo.compareTo(o1.orderNo); }publicOrder(String orderNo,doublevalue){super();this.orderNo = orderNo;this.value = value; ...