java - How do Java public/private and static modifiers affect multiple variables declared on one line?

Question

Are the following equivalent?

private static boolean readAllFiles = false,readAllDirs = false;

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

And if so, do they still have the same modifiers with different values?

private static boolean readAllFiles = false,readAllDirs = true;

Answer 1

はい、初期値に関係なく、同等です。

デモ用のテスト コードを次に示します。

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);
  }
}

Answer 2

それらはすべて同等です。

あなたの最後の発言:

private static boolean readAllFiles = false,readAllDirs = true;

次と同等です。

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