Java字符串格式条件

Question

我想写一个取决于人的性别的句子，这是我可以做的：

String createSentence(String name, boolean isMale) {
    return String.format(isMale ? "I met %s, he was OK." : "I met %s, she was OK.", name);
}

但你已经看到了失败（它有效，但代码是重复的），我想要这样的东西：

String createSentence(String name, boolean isMale) {
    return String.format("I met %s, %b?'he':'she' was OK.", name, isMale);
}

这个 ofc 不起作用，但是这样的事情可能吗？

编辑：

由于我希望生成许多句子，即使是不同的语言，并且它们将存储为某种类型或数组，因此此解决方案不方便：

static String createSentence(String name, boolean isMale) {
    return String.format("I met %s, "+(isMale?"he":"she")+" was OK.", name);
}

Answer 1

怎么样

return String.format("I met %s, "+(isMale?"he":"she")+" was OK.", name);

或者

return String.format("I met %s, %s was OK.", name, (isMale ? "he" : "she"));

---

如果您可以将isMale类型isMale为整数，例如表示映射

• 0 -> she ，
• 1 -> he

您可以使用MessageFormat及其{id,choce,optionValue}

static String createSentence(String name, int isMale) {
    return MessageFormat.format("I met {0}, {1,choice,0#she|1#he} is fine",
            name, isMale);

}

Answer 2

你可以选择一个组合：

String createSentence(String name, boolean isMale) {
    return String.format("I met %s, %s was OK.", name, isMale? "he": "she");
}  

Answer 3

String.format("I met %s, %s was OK.", name, isMale ? "he" : "she");

Answer 4

使用enum怎么样？

enum Gender {

    FEMALE("she"), MALE("he") /* ... */;

    private final String pronoun;

    private Gender(String pronoun) {
        this.pronoun = pronoun;
    }

    public String pronoun() {
        return pronoun;
    }

}

private static String createSentence(String name, Gender gender) {
    return String.format("I met %s, %s was OK.", name, gender.pronoun());
}

public static void main(String[] args) {
    System.out.println(createSentence("Glenda", Gender.FEMALE));
    System.out.println(createSentence("Glen", Gender.MALE));
}

Answer 5

您可以传递代词本身，然后不必担心任何情况。

static String createSentence(String name, String pronoun) {
        return String.format("I met %s, %s was OK.", name, pronoun);
}

String sentence = createSentence("Fred", "he");

如果你需要使用布尔变量，你可以实现一个装饰器。

Answer 6

尝试这个 ：

 return "I met "+String.format(isMale ? " %s, he " : " %s, she ", name)+" was OK."