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Returns the maximum element of the given collection, according to the natural ordering of its elements. All elements in the collection must implement the Comparable interface. Furthermore, all elements in the collection must be mutually comparable (that is, e1.compareTo(e2) must not throw a Cla...
How many times have you used the new keyword in C++, then forgot to call delete later on? Naturally, memory leaks are a big problem in languages like C++. It's great that you can dynamically create class instances on the heap at run time, but memory management can be a headache. Both...
Every array also belongs to a class that is reflected as a Class object that is shared by all arrays with the same element type and number of dimensions. The primitive Java types (boolean, byte, char, short, int, long, float, and double), and the keyword void are also represented as ...
The abstract classSocketImplis a common superclass of all classes that actually implement sockets. It is used to create both client and server sockets. A "plain" socket implements these methods exactly as described, without attempting to go through a firewall or proxy. ...
as shown in Figure 3. Pay attention to the visibility notation, which will tell you if they are to be made public or private. Other child classes Now create all of the other child classes, as indicated in Figure 3. You must implement the ...
Serialization does not read or assign values to the fields of any object that does not implement the java.io.Serializable interface. Subclasses of Objects that are not serializable can be serializable. In this case the non-serializable class must have a no-arg constructor to allow its fields to...
By convention, an instance method is passed a reference to its instance in local variable 0. In the Java programming language the instance is accessible via the this keyword. Class (static) methods do not have an instance, so for them this use of local variable 0 is unnecessary. A class...
To implement native methods, JavaCPP generates appropriate code for JNI, and passes it to the C++ compiler to build a native library. At no point do we need to get our hands dirty with JNI, makefiles, or other native tools. The important thing to realize here is that, while we do all...
序列化是通过实现serializable接口,该接口没有需要实现的方法,implement Serializable只是为了标注该对象是可被序列化的,使用一个输出流(FileOutputStream)来构造一个ObjectOutputStream对象,接着使用ObjectOutputStream对象的writeObejct(Object object)方法就可以将参数的obj对象到磁盘,需要恢复的时候使用输入流。 序列化是将...