为什么我写java程序时，明明一点语法错误都没有，但是编译时总会出这个错误：non-static variable this cannot be referenced from a static context？ 害得我要在每一个变量、函数、类前加上static才能解决，为什么会这样呢？有没有什么好的解决方法？

Along with lambdas, Java SE 8 brought method references to the Java language. This tutorial offers a brief overview of method references in Java, then gets you started using them with Java code ...

End your tour of Java’s essential language features with Jeff’s introduction to Java 8’s method references, interface default and static methods, and three lesser known language updates that every ...