我的 while 循环和哨兵值没有注册有一个简单的问题。我得出的结论是我的问题在于我的 while 循环,或者可能是用户输入的分配。我的程序的基本思想是我有一个带有字符串值的二维数组。我正在尝试根据用户输入访问那些。我询问用户想要什么状态,然后我的程序将返回状态、州鸟和州花。在主类中,我需要请求用户输入、使用 while 循环和我选择为“none”的标记值。我希望用户能够继续询问状态,直到他们在命令行中输入 none。我在我的代码中包含了注释,以帮助尝试和理解我正在尝试做的事情。我的问题是:为什么我的哨兵值不起作用?即使我没有输入,循环也会永远继续。
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
class StateInfo{
private int counter;
private int i;
private int summary[];
public String output;
private String userInput;
// 50 states, each index with 3 entries (state, bird, flower)
//String[][] stateInfo = new String[50][3];
String stateInfo[][] = {
{"Alabama", "Camellia", "Yellowhammer"},
{"Alaska", "Alpine Forget-me-not", "Willow Ptarmigan"},
{"Arizona", "Saguaro Cactus Blossom", "Cactus Wren"},
{"Arkansas", "Apple Blossom", "Mockingbird"},
{"California", "California Poppy", "California Quail"},
{"Colorado", "Rocky Mountain Columbine", "Lark Bunting"},
{"Connecticut", "Mountain Laurel", "American Robin"},
{"Delaware", "Peach Blossom", "Blue Hen Chicken"},
{"Florida", "Orange Blossom", "Northern Mockingbird"},
{"Georgia", "Cherokee Rose", "Brown Thrasher"},
{"Hawaii", "Pua Aloalo", "Hawaiian Goose"},
{"Idaho", "Syringa", " Mountain Bluebird"},
{"Illinois", "Violet", "Northern Cardinal"},
{"Indiana", "Peony", "Northern Cardinal"},
{"Iowa", "Wild Rose", " Eastern Goldfinch"},
{"Kansas", "Wild Native Sunflower", "Western Meadowlark"},
MM们
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