java 8 lambda

Original link: Javacodegeeks translation: importnew.com-Go JunyangLink: http://www.importnew.com/6675.htmlAs a Java programmer, you might have the experience of calling a method to get a return value but not invoking the return value directly as a parameter. We will first determine if the return value is null and can be used as a parameter to other methods only if it is not null. This is what some of the external APIs like Guava are trying to solve. S

final all interface methods are essentially public. JDK 8 controversially brings the advantages of abstract classes to the interface. The effect is that today there are a large number of abstract classes that may be replaced with interfaces by default methods. 2.:: Method Reference A method reference provides a very useful syntax for directly referencing a method or constructor of an existing Java class or

Pseudo-sharing and cache row filling, from Java 6, Java 7 to Java 8, java There are already a lot of articles about pseudo-sharing. For multi-threaded programming, especially when processing lists and arrays with multiple threads, you should pay attention to the issue of pse

Original address Java SE 8 was released on March 18, 2014, while Java 9 is expected to be released in 2016; December 2009, Java EE 6 released; September 2004, J2SE 1.5 released; May 2000, JDK1.3, JDK1.4 successively released; January 1996, JDK1.0 released; May 23, 1995, the

Java 8 new feature tour: Using Stream API to process collections In this "Java 8 new feature tutorial" series, we will explain in depth and use code to demonstrate how to traverse collections through streams and how to create streams from collections and arrays, and how to aggregate the stream value. In the previous a

Java GBK, UTF-8 coding, javagbkutf-8 Coding Author: Qing Dujun Address: http://blog.csdn.net/qingdujun/article/details/41366301 1, GBK, UTF-8 Encoding Note: The default value is GBK encoding. Package io. dol. sn; import java. io. fileOutputStream; import

two numbers. 5) The parameter types in all LAMBDA expressions so far are inferred by the compiler. Of course it is.However, it is sometimes better to explicitly declare the parameter type, and you need to enclose the argument in parentheses, with multiple argumentsThe same is true of the situation.6) method Reference: A handy way to invoke parameters in a lambda expression.Such as:Artist ,

Day1 install the JDK 8 Environment and the first java program, day1jdk 8Install JDK 8 Step 1: Download the jdk installation package. Here we will download the jdk 8 on the orical official website. Note: Remember to check accept when downloading. Decompress the downloaded package: tar zxvf jdk-8u162-linux-x64.tar.gz

Original:http://it.deepinmind.com/java/2015/03/17/20-examples-of-date-and-time-api-from-Java8.htmlIn addition to lambda expressions, stream, and a few minor improvements, Java 8 introduces a new set of time and date APIs, and in this tutorial we will learn how to use this set of Ja