如果一個數組對象要進行比較，則這個對象的實例類要實現Compareable接口
“` public class Employee implements Comparable{ /** * name name */ PRivate String name; private double salary;
public Employee(String name, double salary) { this.name = name; this.salary = salary;}public int compareTo(Employee o) { return Double.compare(salary, o.salary);}public static void main(String[] args) {Employee[] s = new Employee[3]; s[0] = new Employee("hssdst",8); s[1] = new Employee("dfsfds",6); s[2] = new Employee("dfsfds",7); Arrays.sort(s); for(Employee emo : s) { System.out.println(emo.getName()+","+emo.getSalary()); //結果為dfsfds,6.0、dfsfds,7.0、hssdst,8.0 }}}
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