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import java.util.ArrayList;
import java.util.List;
public class HistoryCommand {
// 用List保存所有输入过的命令
private List<String> cmdList;
public HistoryCommand() {
cmdList = new ArrayList<>();
}
// 添加命令到历史
public void addCommand(String cmd) {
cmdList.add(cmd);
}
// 打印全部历史命令
public void showHistory() {
System.out.println("===== 命令历史记录 =====");
for (int i = 0; i < cmdList.size(); i++) {
System.out.println((i+1) + ". " + cmdList.get(i));
}
}
}