Java "method does not override or implement a method from a supertype"错误

Question

当我尝试使用 javac 或 gradlew 编译以下代码时

我收到错误方法没有覆盖或实现父类(super class)型@Override的方法两个@Override函数发生错误

如何解决这个问题？

代码.java:

package com.android.commands.locksettings;

import android.os.ResultReceiver;
import android.os.ServiceManager;
import android.os.ShellCallback;

import com.android.internal.os.BaseCommand;
import com.android.internal.widget.ILockSettings;

import java.io.FileDescriptor;
import java.io.PrintStream;

public final class LockSettingsCmd extends BaseCommand {

    private static final String USAGE =
            "usage: locksettings set-pattern [--old OLD_CREDENTIAL] NEW_PATTERN\n" +
            "       locksettings set-pin [--old OLD_CREDENTIAL] NEW_PIN\n" +
            "       locksettings set-password [--old OLD_CREDENTIAL] NEW_PASSWORD\n" +
            "       locksettings clear [--old OLD_CREDENTIAL]\n" +
            "\n" +
            "locksettings set-pattern: sets a pattern\n" +
            "    A pattern is specified by a non-separated list of numbers that index the cell\n" +
            "    on the pattern in a 1-based manner in left to right and top to bottom order,\n" +
            "    i.e. the top-left cell is indexed with 1, whereas the bottom-right cell\n" +
            "    is indexed with 9. Example: 1234\n" +
            "\n" +
            "locksettings set-pin: sets a PIN\n" +
            "\n" +
            "locksettings set-password: sets a password\n" +
            "\n" +
            "locksettings clear: clears the unlock credential\n";

    public static void main(String[] args) {
        (new LockSettingsCmd()).run(args);
    }

    @Override
    public void onShowUsage(PrintStream out) {
        out.println(USAGE);
    }

    @Override
    public void onRun() throws Exception {
        ILockSettings lockSettings = ILockSettings.Stub.asInterface(ServiceManager.getService("lock_settings"));
        lockSettings.asBinder().shellCommand(FileDescriptor.in, FileDescriptor.out,
            FileDescriptor.err, getRawArgs(), new ShellCallback(), new ResultReceiver(null) {});
    }
}

Answer 1

通过恢复原始BaseCommand文件解决，感谢@deHaar