因为它不受支持，为什么你想要一个什么都不做的goto关键字或者一个名为goto的变量?

虽然你可以使用break标签;并继续标签;语句来有效地做goto所做的事情。但我不建议这么做。

public static void main(String [] args) {

     boolean t = true;

     first: {
        second: {
           third: {
               System.out.println("Before the break");

               if (t) {
                  break second;
               }

               System.out.println("Not executed");
           }

           System.out.println("Not executed - end of second block");
        }

        System.out.println("End of third block");
     }
}

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.

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

关键字const和goto是 矜持，尽管事实并非如此 目前使用。”

如何在Java中使用"continue"标签的例子是:

public class Label {
    public static void main(String[] args) {
        int temp = 0;
        out: // label
        for (int i = 0; i < 3; ++i) {
            System.out.println("I am here");
            for (int j = 0; j < 20; ++j) {
                if(temp==0) {
                    System.out.println("j: " + j);
                    if (j == 1) {
                        temp = j;
                        continue out; // goto label "out"
                    }
                }
            }
        }
        System.out.println("temp = " + temp);
    }
}

结果:

I am here // i=0
j: 0
j: 1
I am here // i=1
I am here // i=2
temp = 1

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。

James Gosling创建了支持goto语句的原始JVM，但后来他删除了这个不必要的特性。没有必要使用goto的主要原因是，通常可以用可读性更好的语句(如break/continue)或将一段代码提取到方法中来代替它。

来源:James Gosling，问答环节