Community driven content discussing all aspects of software development from DevOps to design patterns. When the seminal Java whitepaper introduced the language in 1995, it listed seven key benefits ...

Everything in Java is an object, except primitives like int. Turns out that small caveat has big implications for the language, which have compounded over the years. This seemingly minor design ...

虽然 Kotlin 推出很多年了，但是在国内的普及度并没有成压倒性优势，还是有很多新老项目使用Java语言开发的。（Java永不为奴 😅😅） 如果项目中其他小伙伴使用的Kotlin，而我只会Java，那我怎么调用他Kotlin的方法？其实Kotlin早给我们做好了兼容，很多特性我们 ...

Descriptors.java:1763: warning: [removal] Integer (int) in Integer has been deprecated and marked for removal #8462 Closed Closed Descriptors.java:1763: warning: [removal] Integer (int) in Integer has ...

Java包装类，Wrapper~由于在java中，数据类型总共可分为两大种，基本数据类型(值类型)和类类型(引用数据类型)。基本类型的数据不是对象，所以对于要将数据类型作为对象来使用的情况，java提供了相对应的包装类。对于8种数据类型的包装类分别是： 包装类提供 ...

Upgrading from 1.2.5 to 4.3.0. I have an expression that used to work that now fails when parsing integers. I converted a timestamp into a JODA Date Time using the ...

一、Java的数据类型和C/C++有所不同，int与integer实质上来讲是严格的两种数据类型，分别是基本数据类型和复杂数据类型 ...