Since its introduction in Java 8, the Stream API has become a staple of Java development. The basic operations like iterating, filtering, mapping sequences of elements are deceptively simple to use. But these can also be overused and fall into some common pitfalls. To get a better understandi...
packageorg.arpit.java2blog; importjava.io.File; publicclassGetSizeOfFileMain{ publicstaticvoidmain(String[]args){ // Read the file Filemp3File=newFile("/Users/Arpit/Desktop/MySong.mp3"); // Use length method to get size of file in bytes doublefileSizeinBytes=mp3File.length(); System.o...
The following code should demonstrate how to write a string to a file and read it back in again. Here we use a file stream that is created on the fly and automatically closed when we are done. Of course you could use any stream type and handle its lifetime yourself. 1procedureWriteText...
how to use protobuf Reflection? 最近工作中,需要做一些消息动态解析,因为使用的 protobuf,考虑使用protobuf的反射特性。 1 reflection in C++ 在c++中使用protobuf 反射 C++和Java 不同的是: c++有一个全局的pool,管理了所有定义在 proto 文件里的消息原型, 我们可以通过消息全称,查找到对应的单例的消息原型,...
Calculating the size of a directory – Apache Commons IO Apache Commons IO is a great library which has convenient I/O utilities. We can use this library to calculate the size of a directory. This is a tried and tested library. This already includes good error handling, and takes symbolic...
Use thegetaddrinfoFunction to Host Name to IP Address in C getaddrinfois part of the UNIX networking programming facilities, and it can convert network host information to the IP address and conversely.getaddrinfois also a POSIX compliant function call, and it can do conversion regardless of ...
Log4cplusis derived by the popularLog4jwritten in java. This tutorial show how create: a configuration file define custom log for classes define custom appenders code example howandwhenuse the different log levels Log levels To deal withLog4cplusyou must understand the concept oflog levelswhich...
process the user input until the new line orEOFis encountered, there are no guarantees it will fit in the fixed-sizecharbuffer. If we have to use a fixed buffer, we are responsible for keeping a count of the input size and stopping storing it in the buffer after the capacity is reached...
I'm assuming that you aren't really interested in the size of the pointer itself, which would be 4 bytes on a 32 bit system and 8 bytes on a 64 bit system. If I use new operator for allocating memory , how to get the memory size of dynamically memory allocated pointer?There...
Working Of List Intreface and LinkedList Class In Java Collection How to use ArrayList in Java Collections in C#: ArrayList and Arrays Stack Class in Java Working With Collection Class in JavaSandeep Sharma Working as a Senior Engineering Analyst having work experience in Core Java, Struts, Spri...