Question

每次编译它都说我在这段代码中有21个错误？我真的被困在这一点上......我已经尝试了一切。如果有人可以帮助我会很棒。

以下是代码：

//Normal-Player End

public static void archiveLogs(Player player, String[] cmd) {
    try {
        if (player.getRights() < 1)
            return;
        String location = "";
        if (player.getRights() >= 5) {
            location = "data/logs/admin" + player.getUsername() + ".txt";
        } else if (player.getRights() == 4) {
            location = "data/logs/mod" + player.getUsername() + ".txt";
        }
        String afterCMD = "";
        for (int i = 1; i < cmd.length; i++)
    afterCMD += cmd[i] + ((i == cmd.length - 1) ? "" : " ");
        BufferedWriter writer = new BufferedWriter(new FileWriter(location,
                true));
        writer.write("[" + now("dd MMMMM yyyy 'at' hh:mm:ss z") + "] - ::"
                + cmd[0] + " " + afterCMD);
        writer.newLine();
        writer.flush();
        writer.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

public static String now(String dateFormat) {
    Calendar cal = Calendar.getInstance();
    SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
    return sdf.format(cal.getTime());
}

private Commands() {

}

}

以下是我的编译器所说的内容：

                        writer.flush();
                        ^
src\com\rs\game\player\content\Commands.java:2502: error: class, interface, or e
num expected
                        writer.close();
                        ^
src\com\rs\game\player\content\Commands.java:2503: error: class, interface, or e
num expected
                } catch (IOException e) {
                ^
src\com\rs\game\player\content\Commands.java:2505: error: class, interface, or e
num expected
                }
                ^
src\com\rs\game\player\content\Commands.java:2515: error: class, interface, or e
num expected
        public static String now(String dateFormat) {
                      ^
src\com\rs\game\player\content\Commands.java:2517: error: class, interface, or e
num expected
                SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
                ^
src\com\rs\game\player\content\Commands.java:2518: error: class, interface, or e
num expected
                return sdf.format(cal.getTime());
                ^
src\com\rs\game\player\content\Commands.java:2519: error: class, interface, or e
num expected
        }
        ^
Note: src\com\rs\game\player\Inventory.java uses unchecked or unsafe operations.

Note: Recompile with -Xlint:unchecked for details.
21 errors
compiling Dialogues
src\com\rs\game\player\content\Commands.java:2477: error: illegal start of type
                return true;
                ^
src\com\rs\game\player\content\Commands.java:2477: error: ';' expected
                return true;
                      ^
src\com\rs\game\player\content\Commands.java:2483: error: class, interface, or e
num expected
        public static void archiveLogs(Player player, String[] cmd) {
                      ^
src\com\rs\game\player\content\Commands.java:2487: error: class, interface, or e
num expected
                        String location = "";
                        ^
src\com\rs\game\player\content\Commands.java:2488: error: class, interface, or e
num expected
                        if (player.getRights() >= 5) {
                        ^
src\com\rs\game\player\content\Commands.java:2490: error: class, interface, or e
num expected
                        } else if (player.getRights() == 4) {
                        ^
src\com\rs\game\player\content\Commands.java:2492: error: class, interface, or e
num expected
                        }
                        ^
src\com\rs\game\player\content\Commands.java:2494: error: class, interface, or e
num expected
                        for (int i = 1; i < cmd.length; i++)
                        ^
src\com\rs\game\player\content\Commands.java:2494: error: class, interface, or e
num expected
                        for (int i = 1; i < cmd.length; i++)
                                        ^
src\com\rs\game\player\content\Commands.java:2494: error: class, interface, or e
num expected
                        for (int i = 1; i < cmd.length; i++)
                                                        ^
src\com\rs\game\player\content\Commands.java:2496: error: class, interface, or e
num expected
                        BufferedWriter writer = new BufferedWriter(new FileWrite
r(location,
                        ^
src\com\rs\game\player\content\Commands.java:2498: error: class, interface, or e
num expected
                        writer.write("[" + now("dd MMMMM yyyy 'at' hh:mm:ss z")
+ "] - ::"
                        ^
src\com\rs\game\player\content\Commands.java:2500: error: class, interface, or e
num expected
                        writer.newLine();
                        ^
src\com\rs\game\player\content\Commands.java:2501: error: class, interface, or e
num expected
                        writer.flush();
                        ^
src\com\rs\game\player\content\Commands.java:2502: error: class, interface, or e
num expected
                        writer.close();
                        ^
src\com\rs\game\player\content\Commands.java:2503: error: class, interface, or e
num expected
                } catch (IOException e) {
                ^
src\com\rs\game\player\content\Commands.java:2505: error: class, interface, or e
num expected
                }
                ^
src\com\rs\game\player\content\Commands.java:2515: error: class, interface, or e
num expected
        public static String now(String dateFormat) {
                      ^
src\com\rs\game\player\content\Commands.java:2517: error: class, interface, or e
num expected
                SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
                ^
src\com\rs\game\player\content\Commands.java:2518: error: class, interface, or e
num expected
                return sdf.format(cal.getTime());
                ^
src\com\rs\game\player\content\Commands.java:2519: error: class, interface, or e
num expected
        }
        ^
Note: src\com\rs\game\player\Inventory.java uses unchecked or unsafe operations.

Note: Recompile with -Xlint:unchecked for details.
21 errors
compiled Main Server Folder
src\com\rs\game\player\content\Commands.java:2477: error: illegal start of type
                return true;
                ^
src\com\rs\game\player\content\Commands.java:2477: error: ';' expected
                return true;
                      ^
src\com\rs\game\player\content\Commands.java:2483: error: class, interface, or e
num expected
        public static void archiveLogs(Player player, String[] cmd) {
                      ^
src\com\rs\game\player\content\Commands.java:2487: error: class, interface, or e
num expected
                        String location = "";
                        ^
src\com\rs\game\player\content\Commands.java:2488: error: class, interface, or e
num expected
                        if (player.getRights() >= 5) {
                        ^
src\com\rs\game\player\content\Commands.java:2490: error: class, interface, or e
num expected
                        } else if (player.getRights() == 4) {
                        ^
src\com\rs\game\player\content\Commands.java:2492: error: class, interface, or e
num expected
                        }
                        ^
src\com\rs\game\player\content\Commands.java:2494: error: class, interface, or e
num expected
                        for (int i = 1; i < cmd.length; i++)
                        ^
src\com\rs\game\player\content\Commands.java:2494: error: class, interface, or e
num expected
                        for (int i = 1; i < cmd.length; i++)
                                        ^
src\com\rs\game\player\content\Commands.java:2494: error: class, interface, or e
num expected
                        for (int i = 1; i < cmd.length; i++)
                                                        ^
src\com\rs\game\player\content\Commands.java:2496: error: class, interface, or e
num expected
                        BufferedWriter writer = new BufferedWriter(new FileWrite
r(location,
                        ^
src\com\rs\game\player\content\Commands.java:2498: error: class, interface, or e
num expected
                        writer.write("[" + now("dd MMMMM yyyy 'at' hh:mm:ss z")
+ "] - ::"
                        ^
src\com\rs\game\player\content\Commands.java:2500: error: class, interface, or e
num expected
                        writer.newLine();
                        ^
src\com\rs\game\player\content\Commands.java:2501: error: class, interface, or e
num expected
                        writer.flush();
                        ^
src\com\rs\game\player\content\Commands.java:2502: error: class, interface, or e
num expected
                        writer.close();
                        ^
src\com\rs\game\player\content\Commands.java:2503: error: class, interface, or e
num expected
                } catch (IOException e) {
                ^
src\com\rs\game\player\content\Commands.java:2505: error: class, interface, or e
num expected
                }
                ^
src\com\rs\game\player\content\Commands.java:2515: error: class, interface, or e
num expected
        public static String now(String dateFormat) {
                      ^
src\com\rs\game\player\content\Commands.java:2517: error: class, interface, or e
num expected
                SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
                ^
src\com\rs\game\player\content\Commands.java:2518: error: class, interface, or e
num expected
                return sdf.format(cal.getTime());
                ^
src\com\rs\game\player\content\Commands.java:2519: error: class, interface, or e
num expected
        }
        ^
21 errors
compiled Main Server Folder
src\com\rs\game\player\content\Commands.java:2477: error: illegal start of type
                return true;
                ^
src\com\rs\game\player\content\Commands.java:2477: error: ';' expected
                return true;
                      ^
src\com\rs\game\player\content\Commands.java:2483: error: class, interface, or e
num expected
        public static void archiveLogs(Player player, String[] cmd) {
                      ^
src\com\rs\game\player\content\Commands.java:2487: error: class, interface, or e
num expected
                        String location = "";
                        ^
src\com\rs\game\player\content\Commands.java:2488: error: class, interface, or e
num expected
                        if (player.getRights() >= 5) {
                        ^
src\com\rs\game\player\content\Commands.java:2490: error: class, interface, or e
num expected
                        } else if (player.getRights() == 4) {
                        ^
src\com\rs\game\player\content\Commands.java:2492: error: class, interface, or e
num expected
                        }
                        ^
src\com\rs\game\player\content\Commands.java:2494: error: class, interface, or e
num expected
                        for (int i = 1; i < cmd.length; i++)
                        ^
src\com\rs\game\player\content\Commands.java:2494: error: class, interface, or e
num expected
                        for (int i = 1; i < cmd.length; i++)
                                        ^
src\com\rs\game\player\content\Commands.java:2494: error: class, interface, or e
num expected
                        for (int i = 1; i < cmd.length; i++)
                                                        ^
src\com\rs\game\player\content\Commands.java:2496: error: class, interface, or e
num expected
                        BufferedWriter writer = new BufferedWriter(new FileWrite
r(location,
                        ^
src\com\rs\game\player\content\Commands.java:2498: error: class, interface, or e
num expected
                        writer.write("[" + now("dd MMMMM yyyy 'at' hh:mm:ss z")
+ "] - ::"
                        ^
src\com\rs\game\player\content\Commands.java:2500: error: class, interface, or e
num expected
                        writer.newLine();
                        ^
src\com\rs\game\player\content\Commands.java:2501: error: class, interface, or e
num expected
                        writer.flush();
                        ^
src\com\rs\game\player\content\Commands.java:2502: error: class, interface, or e
num expected
                        writer.close();
                        ^
src\com\rs\game\player\content\Commands.java:2503: error: class, interface, or e
num expected
                } catch (IOException e) {
                ^
src\com\rs\game\player\content\Commands.java:2505: error: class, interface, or e
num expected
                }
                ^
src\com\rs\game\player\content\Commands.java:2515: error: class, interface, or e
num expected
        public static String now(String dateFormat) {
                      ^
src\com\rs\game\player\content\Commands.java:2517: error: class, interface, or e
num expected
                SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
                ^
src\com\rs\game\player\content\Commands.java:2518: error: class, interface, or e
num expected
                return sdf.format(cal.getTime());
                ^
src\com\rs\game\player\content\Commands.java:2519: error: class, interface, or enum expected
        }
        ^
Note: src\com\rs\game\player\Inventory.java uses unchecked or unsafe operations.

Note: Recompile with -Xlint:unchecked for details.
21 errors
Compiled all Successfully
Press any key to continue . . .

Answer 1

您必须将所有这些方法放在类声明中。我认为Commands。您的错误尖叫您错过了 class 关键字和声明。（或界面，或枚举;但在您的情况下，它是类;相信我）。

    /**
     * Even though this seems to be a static helper class,
     * you still need the class declaration. The artefact
     * name (Commands.java) won't suffice.
     */
    public class Commands { // <--- Eh?

         private Commands() {
              // Prevent object from being instantiated
         }

         public static void archiveLogs(Player player, String[] cmd) {
              // implementation omitted
         }

         public static String now(String dateFormat) {
              // implementation omitted
         }
    }

额外：

Declaring classes in Java
注意缺少或额外的括号。
如果一切都失败了，请从头开始。构建一个新类，并按方法复制方法，确保语法正确。

您知道，这些类型的问题通常会导致StackOverflow上的错误代表。

class，interface或enum期望错误？

1 个答案: