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Java公共/私有和静态修饰符如何影响一行中声明的多个变量?

access-modifiers declaration static syntax java

3

hhh · 技术社区 · 16 年前

以下是否等效?

private static boolean readAllFiles = false,readAllDirs = false;

private static boolean readAllFiles = false;
private static boolean readAllDirs = false;

private static boolean readAllFiles = false,readAllDirs = true;

2 回复 | 直到 16 年前

1

9

Kip 16 年前

是的,不管它们的初始值是多少,它们都是等价的。

下面是一些测试代码来演示:

public class TestClass
{
  private static boolean readAllFiles = false,readAllDirs = true;

  public static void main(String[] args)
  {
    //these two would result in COMPILE error if both vars were not static
    System.out.println("readAllFiles: " + readAllFiles);
    System.out.println("readAllDirs: " + readAllDirs);
  }
}

public final class TestClass2
{
  public static void main(String[] args)
  {
    //these two DO result in COMPILE error, because both vars are private
    System.out.println("TestClass.readAllFiles: " + TestClass.readAllFiles);
    System.out.println("TestClass.readAllDirs: " + TestClass.readAllDirs);
  }
}

2

4

ryanprayogo 16 年前

它们都是等价的。

你的最后陈述:

private static boolean readAllFiles = false,readAllDirs = true;

相当于:

private static boolean readAllFiles = false;
private static boolean readAllDirs = true;