java - 为什么 ">> "不会在我的 printf 语句末尾打印出来？

Question

我正在尝试使用 Jansi Java 库在 CMD/控制台中使用颜色，但我遇到了一个小问题。当我使用 Jansi 库并尝试使用 print f 语句时

System.out.printf("Hello young lad! What is thy " + RED + "name " + WHITE + "you were given at birth?\n>> ");

“>>”最后不打印。相反，扫描仪被调用并询问我的输入。为什么会发生这种情况，有什么方法可以使“>>”和扫描仪输入显示在一行上吗？

import java.util.Scanner;

import org.fusesource.jansi.AnsiConsole;


public class Test {
    public static void main(String[] args) {
        AnsiConsole.systemInstall();

        String name;
        Scanner scanner = new Scanner(System.in);

        String BLACK = "\u001B[0;30m";
        String RED = "\u001B[0;31m";
        String GREEN = "\u001B[0;32m";
        String YELLOW = "\u001B[0;33m";
        String BLUE = "\u001B[0;34m";
        String MAGENTA = "\u001B[0;35m";
        String CYAN = "\u001B[0;36m";
        String WHITE = "\u001B[0;37m";

        System.out.printf("Hello young lad! What is thy " + RED + "name " + WHITE + "you were given at birth?\n>> ");
        name = scanner.nextLine();
    }
}

Answer 1

这段代码在注释掉 AnsiConsole 之后工作正常。

这是我打印出来的。

Hello young lad! What is thy [0;31mname [0;37myou were given at birth?
>> John