我正在尝试为我的" WordData"实施比较方法。对象。我想比较对象的两个String字段,它们是" word" 请看下面。 这是我的比较方法实现:
Arrays.sort(list, new Comparator<WordData>(){
@Override
public int compare(WordData o1, WordData o2){
return o1.getWord().compareTo(o2.getWord());
}
});
这是我的WordData类:
public class WordData {
private String word;
private int counter =0;
private String[] positions = new String[1];
public WordData(String word, int position, int lineNo, int counter) {
this.word=word;
this.counter=counter;
positions[0]=String.valueOf(position)+", "+String.valueOf(lineNo);
}
public String getWord() {
return word;
}}
我在compare()方法中收到错误消息,如:
Error:(62, 15) java: no suitable method found for sort(java.util.List<PrintTest.WordData>,<anonymous java.util.Comparator<PrintTest.WordData>>)
method java.util.Arrays.<T>sort(T[],java.util.Comparator<? super T>) is not applicable
(cannot infer type-variable(s) T
(argument mismatch; java.util.List<PrintTest.WordData> cannot be converted to T[]))
method java.util.Arrays.<T>sort(T[],int,int,java.util.Comparator<? super T>) is not applicable
(cannot infer type-variable(s) T
(actual and formal argument lists differ in length))