从Java访问Scala对象字段 [英] Accessing scala object fields from java

问题描述

我无法从Java访问scala对象的字段.

I'm having trouble accessing the fields of a scala object from java.

斯卡拉:

object TestObject {
  val field = 5 
}

Java:

public class JavaTest
{
  public static void main(String[] args)
  {
    int i = TestObject.field;
  }
}

错误:

[error] JavaTest.java: cannot find symbol
[error] symbol  : variable field
[error] location: class TestObject
[error]     int i = TestObject.field;

推荐答案

Scala字段是具有相同名称的getter的私有变量，以保持不变性.

Scala fields are private variables with a getter of the same name to preserve immutability.

public class JavaTest
{
  public static void main(String[] args)
  {
    int i = TestObject.field();
  }
}

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