java与javascript的String.fromCharCode等价于什么?

可能是这样的:

public static String fromCharCode(int... codePoints) {
    StringBuilder builder = new StringBuilder(codePoints.length);
    for (int codePoint : codePoints) {
        builder.append(Character.toChars(codePoint));
    }
    return builder.toString();
}

注意铸造到 char 烧焦 (65535). 这个 烧焦 Unicode 3.1

更新 :的 String 实际上 a constructor taking an int[]

public static String fromCharCode(int... codePoints) {
    return new String(codePoints, 0, codePoints.length);
}