Old readers all know that I switched to java by self-study. At that time, under the pressure of survival, I learned more quickly, and many knowledge points only stayed at the level that I could use. Recently, it is meaningless to use light without knowing the principle. Each use is mechanical and “skilled”. In ..
Background Java 8 has been released for several years and java 12 has been released some time ago, but in normal work, the environment of many projects still stays in java1.7. Moreover, many new features of java8 are revolutionary, such as optimization of various sets, lambda expressions, etc., so we still need to understand the ..