View Compilation Error

0_0_39820088_26439\Main.java:9: 错误: 非法的表达式开始
        System.out.printf(%.3f", v, "\n");
                          ^
0_0_39820088_26439\Main.java:9: 错误: 需要')'
        System.out.printf(%.3f", v, "\n");
                              ^
0_0_39820088_26439\Main.java:9: 错误: 非法字符: '\'
        System.out.printf(%.3f", v, "\n");
                                     ^
0_0_39820088_26439\Main.java:9: 错误: 未结束的字符串文字
        System.out.printf(%.3f", v, "\n");
                                       ^
4 个错误