为什么Eclipse需要我在java代码中设置（任意）括号？ [英] Why does Eclipse require me to set (arbitrary) brackets in java code?
问题描述
我目前正试图找出如何使用Eclipse在java中编程Escape模型。我是Escape和Eclipse的新手，自从我在java编程以来已经有一段时间了，所以请原谅，如果这是一个愚蠢的问题。
I am currently trying to figure out how to use Eclipse to program Escape models in java. I am quite new to Escape and Eclipse, and it has been a while since I programmed in java, so please excuse if this is a stupid question.
基本上，我一直困扰着奇怪的Eclipse错误消息。我跟踪了最后一个这个问题：
Basically, I have been haunted by strange Eclipse error messages. I tracked the last one down to this problem:
这样做：
public class CoordinationGame extends Scape {
.
.
.
Scape lattice;
boolean test;
int test2;
{
test = true;
test2 = 3;
}
{
lattice = new Scape(new Array2DVonNeumann());
}
}
这会给出奇怪的错误信息： / p>
This gives strange error messages:
public class CoordinationGame extends Scape {
.
.
.
Scape lattice;
boolean test;
int test2;
test = true;
test2 = 3;
lattice = new Scape(new Array2DVonNeumann());
}
{期望afer int test2 和令牌lattice上的语法错误，之后的VariableDeclaratorId令牌。
正如我所说，Java已经有一段时间了，但是IIRC不应该需要这些括号。 此问题确定这个括号使用是一个初始化块，但这可能不是我想在这里做的。
As I said, Java has been some time, but IIRC, those brackets should not be required. This question establishes that this bracket usage is an initializing block, but this is probably not what I want to do here.
有谁知道为什么Eclipse需要我设置这些括号，我可以做些什么来改变这种行为？
Does anyone know why Eclipse requires me to set these brackets, or what I could do to change this behaviour?
提前感谢！
Martin
Thanks in advance! Martin
PS：可能有用的一些信息：
PS: Some information that will probably be useful:
我使用eclipse-indigo ，安装了建模工具包AMP。我不完全确定如何检查这个，但我相信我正在使用jre6，因为这是我的包资源管理器的JRE系统库选项卡中所说的。在未来，我打算找到一种使用Groovy运行Escape建模环境的方法，但这将是另一个问题。
I use eclipse-indigo, installed the modelling toolkit AMP. I am not entirely sure how to check this, but I believe I am using jre6, as this is what it says in the JRE System Library tab of my package explorer. In the future, I plan to find a way to run the Escape modelling environment with Groovy, but that will be another question …
推荐答案
这与您的IDE无关。 Java不允许在类级别的语句，但它允许在类级别的初始化器。
This has nothing to do with your IDE. Java does not allow statements at class level, it does however allow initializers at class level.
{foo();}
这是一个实例初始化程序，它将被编译器复制到所有构造函数中。
（请参阅 Java教程>初始化字段）
This is an instance initializer, it will be copied into all constructors by the compiler.
(See Java Tutorial > Initializing Fields)
在Java中，您可以在
In Java, you can write statements in
- 中写一个方法
- 一个构造函数（这是一种特殊的方法）
- 一个初始化程序块（静态或实例）
，但没有其他地方。
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