Comparable接口中compareTo方法的签名: compareTo方法是Comparable接口中唯一需要实现的方法。其签名如下: java public interface Comparable<T> { int compareTo(T o); } 这里,T是泛型类型参数,表示当前对象可以与哪个类型的对象进行比较。 compareTo方法的返回值
}publicvoidsetPubTime(Date pubTime) {this.pubTime =pubTime; }//时间降序 点击量升序 标题降序@OverridepublicintcompareTo(Items o) {intresult = 0;//按照生产时间降序result = -this.pubTime.compareTo(o.pubTime);if(0==result){//如果生产时间相同 就按照销售量升序排列result =this.hits-o.hits;...
public int compareTo(Person other) { // 按照年龄升序排序 return this.age - other.age; } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 在这个示例中,compareTo方法返回的结果是根据年龄比较的,如果调用person1.compareTo(person2),返回的结果将是负数、零或正数,分别表示person1的年龄小于、...
当元素的类型没有实现java.lang.Comparable接口而又不方便修改代码,或者实现了java.lang.Comparable接口的排序规则不适合当前的操作,那么可以考虑使用Comparator接口的实现类来排序。 Comparator接口中只有两个抽象方法int compare(Object o1, Object o2);、boolean equals(Object obj);,Comparator接口实现类默认继承了Object...
Namespace: Java.Lang Assembly: Mono.Android.dll Compares this object with the specified object for order.C# 复制 [Android.Runtime.Register("compareTo", "(Ljava/lang/Object;)I", "GetCompareTo_Ljava_lang_Object_Handler:Java.Lang.IComparableInvoker, Mono.Android, Version=0.0.0.0, Culture=...
实体类:java.lang.Comparable(接口) + comareTo(重写方法),业务排序类 java.util.Comparator(接口) + compare(重写方法). 这两个接口我们非常的熟悉,但是 在用的时候会有一些不知道怎么下手的感觉,现在用案例进行总结,消除对这个知识点的理解盲区(个人的理解,如果有错误 请多多指教)。
int IComparable.CompareTo (Java.Lang.Object o); Parameters o Object Returns Int32 Implements CompareTo(Object) Remarks Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5...
CompareTo(Object) Method Reference Feedback Definition Namespace: Java.Util Assembly: Mono.Android.dll C# Kopiëren int IComparable.CompareTo (Java.Lang.Object o); Parameters o Object Returns Int32 Implements CompareTo(Object) Remarks Portions of this page are modifications based on ...
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This interface imposes a total ordering on the objects of each class that implements it. This ordering is referred to as the class'snatural ordering, and the class'scompareTomethod is referred to as itsnatural comparison method. Lists (and arrays) of objects that implement this interface can ...