读取.txt文档里的名字,随机抽取四个人名
代码:
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class NameranList {
public static void main(String[] args) throws IOException {
try {
BufferedReader br = new BufferedReader(new FileReader("文件路径"));
List<String> ls= new ArrayList<>();
while(br.readLine()!=null) {
ls.add(br.readLine());
}
for(int i =0;i<4;i++) {
int r = (int)(Math.random()*ls.size());
System.out.println(ls.remove(r));
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
}
```取.txt文档里的名字,随机抽取四个人名