Question

我正在使用可在此处找到的雪球词干http://snowball.tartarus.org/

我正在使用这个论坛问题为我自己的项目使用词干算法

Is there a java implementation of Porter2 stemmer

我使用给定的类并使用前面回答的帖子中给出的代码

Class stemClass = Class.forName("org.tartarus.snowball.ext." + lang + "Stemmer");
stemmer = (SnowballProgram) stemClass.newInstance();
stemmer.setCurrent("your_word");
stemmer.stem();
String your_stemmed_word = stemmer.getCurrent();

但是当我使用try catch语句时，我收到此错误

assmt1/invert3.java:339: error: incompatible types: try-with-resources not applicable to variable type
      try(  Class stemClass = Class.forName("org.tartarus.snowball.ext." +"english"+ "Stemmer");
                  ^
(Class cannot be converted to AutoCloseable)
assmt1/invert3.java:340: error: incompatible types: try-with-resources not applicable to variable type
        SnowballStemmer stemmer = (SnowballStemmer) stemClass.newInstance())
                        ^
(SnowballStemmer cannot be converted to AutoCloseable)
2 errors

真的不确定如何解决这个问题

Answer 1

只能在try-with-resources语句声明中使用实现Sub RunSubtotal() Dim WS As Worksheet Dim MaxRow As Long, I As Long Dim Tot As Double Dim Dte As String Set WS = ActiveSheet MaxRow = WS.Range("A" & WS.Rows.Count).End(xlUp).Row Tot = 0 '---> Clear Col C WS.Range("C:C").ClearContents '---> Sort Worksheet by Date WS.UsedRange.Sort key1:=WS.Range("A1"), order1:=xlAscending, Header:=xlYes Dte = WS.Cells(1, "A") '---> Start Process For I = 1 To MaxRow + 1 If WS.Range("A" & I) <> Dte Then WS.Cells(I - 1, "C") = Tot Dte = WS.Cells(I, "A") Tot = 0 End If Tot = Tot + Val(WS.Cells(I, "B")) Next I MsgBox ("Totals inserted in Col C by date successfully.") End Sub的类。

AutoCloseable语句是一个声明一个的try语句或更多资源。资源是必须在之后关闭的对象程序完成了。 try-with-resources语句确保在语句结束时关闭每个资源。任何实现try-with-resources的对象，包括所有实现java.lang.AutoCloseable的对象可以用作资源。

java.io.Closeable和Class不是SnowballStemmer。将其放在try块中：

AutoCloseable

错误未报告的异常ClassNotFoundException;必须被抓住或宣布被抛出

1 个答案: