使用do/while循环，我需要从用户那里获取输入，然后向后输出

Question

import java.io.*;
class DoWhilePrac2 {
    public static void main (String args[]) throws java.io.IOException {
    BufferedReader br = new BufferedReader (new InputStreamReader (System.in));
    String word1;            
    do {
        System.out.println ("Please enter a series of words, please type . to exit");
        word1 = br.readLine ();            
    }
        while (!word1.equalsIgnoreCase ("."));        
       System.out.println(word1);
    }
}

我有一个学校作业，使用do/while循环，创建一个程序，让用户输入一系列单词（按“.”退出）。然后 输出通过连接所有 把单词拼凑在一起。我需要帮助

Answer 1

可以使用StringBuilder添加用户输入的所有字符串，然后可以将其转换回字符串。这样效率更高。下面是代码

public static String printSentence() throws IOException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    String word = "";
    StringBuilder builder = new StringBuilder();
    do {
        System.out.println("Please enter a series of words, type . to exit");
        builder = builder.append(word);
        word = reader.readLine();
    } while (!word.equals("."));

    return builder.toString();
}