写这个系列的初衷是SAP Chengdu office有越来越多的应届毕业生加入，这些新同事通过在大学的专业学习，具备了Java和JavaScript背景，但是进入SAP之后大家觉得ABAP没有Java和JavaScript好学。
其实任何编程语言总是有很多相通之处，这个系列就是把这三种语言的很多知识点拿来横向比较，即使只会其中一门，也能看懂这些post.
同时对于ABAP较之Java和JavaScript缺乏的一些feature和框架特性，例如闭包，函数式编程，Spring依赖注入等，这些post里面也通过应用层模拟的方式做了一些简单尝试:
全部文章list
Lazy Loading, Singleton and Bridge design pattern in JavaScript and in ABAP
Functional programming – Simulate Curry in ABAP
Functional Programming – Try Reduce in JavaScript and in ABAP
Simulate Mockito in ABAP
A simulation of Java Spring dependency injection annotation @Inject in ABAP
Singleton bypass Trap – ABAP and Java
Weak reference in ABAP and Java
Fibonacci Sequence in ES5, ES6 and ABAP
Java byte code and ABAP Load
How to write a “correct” program rejected by compiler: Exception handling in Java and in ABAP
An small example to learn Garbage collection in Java and in ABAP
String Template in ABAP, ES6, Angular and React
Try to access static private attribute via ABAP RTTI and Java Reflection
Local class in ABAP, Java and JavaScript
Integer in ABAP, Java and JavaScript
Covariance in Java and simulation in ABAP
Various Proxy Design Pattern implementation variants in Java, ABAP and JavaScript
Tag(Marker) Interface in ABAP and Java
Bitwise operation ( OR, AND, XOR ) on ABAP Integer
ABAP ICF handler and Java Servlet
ADBC and JDBC
Weak reference in ABAP and Java
