请参阅下面的链接，它显示了所有java保留字，并告诉您添加了哪些版本。

http://java.sun.com/docs/books/tutorial/java/nutsandbolts/_keywords.html

Goto是保留的，即使目前没有使用，但永远不要说永远:)

它们被保留以供将来使用(请参阅:Java语言关键字)

关键字const和goto是保留的，即使它们目前没有被使用。

Java中没有goto语句的原因可以在“Java语言环境”中找到:

Java has no goto statement. Studies illustrated that goto is (mis)used more often than not simply "because it's there". Eliminating goto led to a simplification of the language--there are no rules about the effects of a goto into the middle of a for statement, for example. Studies on approximately 100,000 lines of C code determined that roughly 90 percent of the goto statements were used purely to obtain the effect of breaking out of nested loops. As mentioned above, multi-level break and continue remove most of the need for goto statements.

理解goto结构是程序员用机器代码和汇编语言编程时遗留下来的，这一点很重要。因为这些语言非常基础(每条指令只做一件事)，程序控制流完全由goto语句完成(但在汇编语言中，这些被称为跳转或分支指令)。

现在，虽然C语言是相当低级的，但它可以被认为是非常高级的汇编语言——C中的每个语句和函数都可以很容易地分解成汇编语言指令。尽管C语言不是当今计算机编程的主要语言，但它仍然在低级应用程序中大量使用，例如嵌入式系统。因为C语言的函数非常接近汇编语言的函数，所以只有在C中包含goto才有意义。

It is clear that Java is an evolution of C/C++. Java shares a lot of features from C, but abstracts a lot more of the details, and therefore is simply written differently. Java is a very high-level language, so it simply is not necessary to have low-level features like goto when more high-level constructs like functions, for, for each, and while loops do the program control flow. Imagine if you were in one function and did a goto to a label into another function. What would happen when the other function returned? This idea is absurd.

这并不一定能回答为什么Java包含goto语句却不让它编译，但重要的是要知道为什么goto在较低级的应用程序中首先被使用，以及为什么在Java中使用它没有意义。

它被认为是不能做的事情之一，但可能被列为保留词，以避免开发人员感到困惑。

不，谢天谢地，Java中没有goto。

goto关键字只保留，但不使用(const也是如此)。

关键字存在，但没有实现。

我能想到的使用goto的唯一好理由是:

for (int i = 0; i < MAX_I; i++) {
    for (int j = 0; j < MAX_J; j++) {
        // do stuff
        goto outsideloops; // to break out of both loops
    }
}
outsideloops:

在Java中，你可以这样做:

loops:
for (int i = 0; i < MAX_I; i++) {
    for (int j = 0; j < MAX_J; j++) {
        // do stuff
        break loops;
    }
}