import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.Reader;
import java.util.Arrays;
import java.util.LinkedList;
public class ProjectTwoAccessControl{
// public static void fOrAAdd(String x,PrintWriter n){
// n.write(x);
// }
public static void main(String [] args) throws IOException{
PrintWriter friends = new PrintWriter("friends.txt");
PrintWriter audit = new PrintWriter("auditlog.txt");
try {
FileInputStream inputCommands;
inputCommands = new FileInputStream("test.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(inputCommands));
String line;
while ((line = br.readLine()) != null){ //2
String[] command = line.split(" ");
System.out.println(Arrays.toString(command));
// for(int i = 0; i < command.length;i++){ //1
if (command[0] == "friendadd"){
friends.write(command[1]);
audit.write("Friend " + command[1] + " was added.");
}
// } //1
} //2
}//try end
catch (FileNotFoundException e) {
System.out.println("No file found by this name");
}
friends.close();
audit.close();
}
}
我正在尝试为学校作业制作社交媒体风格的访问控制,并且我将在整个晚上继续工作,但我无法弄清楚为什么PrintWriters没有写作。我加入来打印数组&#34;命令&#34; out,它似乎工作正常,但没有任何东西会打印到我的friends.txt或audit.txt。
答案 0 :(得分:-3)
zack是对的,你需要在PrintWriter上调用flush(),因为close()不会调用flush()