java - 使用indexOf搜索包含某些字母的字符串

Question

我写出了以下代码，我的目标是在提示符处输入一个字符串，并返回列表中包含该字符串的任何单词。我想我只是错过了一些小东西，因为当我运行程序时它会打印整个单词列表。任何帮助，将不胜感激。

package assignment1;

import java.net.*;
import java.util.ArrayList;
import java.util.List;
import java.io.*;

public class URLReader {
static List<String> words = new ArrayList<String>();

public static void main(String[] args) throws Exception {
    System.out.println("Please Input A String");
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String letters = br.readLine();
    URL oracle = new URL("http://dl.dropbox.com/u/18678304/2011/BSc2/words.txt");
    BufferedReader in = new BufferedReader(new InputStreamReader(oracle.openStream()));
    String inputLine;

    while ((inputLine = in.readLine()) != null)
        words.add(inputLine);
        in.close();

for(int i = 0; i<words.size(); i++)
{
    if(words.get(i).indexOf(letters) >= 0);
        System.out.println(words.get(i));
}

}
}

Answer 1

if 语句末尾有一个 ;:

if(words.get(i).indexOf(letters) >= 0);
    System.out.println(words.get(i));

应该是:

if(words.get(i).indexOf(letters) >= 0)
    System.out.println(words.get(i));