View Compilation Error

0_0_31858228_32225\Main.java:13: 错误: 非法字符: '\uff0c'
            y2 = Double.parseDouble(xy.substring(6，7));
                                                  ^
0_0_31858228_32225\Main.java:13: 错误: 需要';'
            y2 = Double.parseDouble(xy.substring(6，7));
                                                   ^
0_0_31858228_32225\Main.java:13: 错误: 非法的表达式开始
            y2 = Double.parseDouble(xy.substring(6，7));
                                                    ^
0_0_31858228_32225\Main.java:13: 错误: 需要';'
            y2 = Double.parseDouble(xy.substring(6，7));
                                                     ^
4 个错误