java - if else 语句失败

Question

for (h = 1; h <= userInput; h++) {
    while (h <= userInput) {

        System.out.println("\nPick a Y coordinate: (1 - " + row + ")");
        try {
            userInput2 = stdin.nextInt();
            if (userInput2 > 0 && userInput2 <= row) {
            } else {
                System.out.println("Make sure you only choose a"
                        + " coordinate between 1 and " + row);
            }
        } catch (Exception f) {
            System.out.println("Make sure your only choosing a coordinate"
                    + " between 1 and " + row);
            stdin.next();
            continue;
        }

        System.out.println("\nPick a X coordinate: (1 - " + column + ")");

        try {
            userInput3 = stdin.nextInt();
            if (userInput3 > 0 && userInput3 <= column) {
            } else {
                System.out.println("Make sure you only choose a"
                        + " coordinate between 1 and " + column);
            }
        } catch (Exception g) {
            System.out.println("Make sure your only choosing a coordinate"
                    + " between 1 and " + column);
            stdin.next();
            continue;
        }

        if (userGuesses[userInput2][userInput3] == false) {
            userGuesses[userInput2][userInput3] = true;
        }

        if (h == userInput) {
            break;
        } else {
            System.out.println("You've already chosen that coordinate coward!"
                    + " Try again!");
            continue;
        }
    }
}

由于某种原因，最后一个 if else 语句总是被打印出来(SoP 与 else 分开)。即使这是我第一次为这个程序选择坐标。我对编程真的很陌生，也许我犯了一个对其他人来说显而易见的菜鸟错误。

Answer 1

删除嵌套的 while 循环。它阻止 h 更改，

for ( h = 1 ; h <= userInput; h++) { 
    // while (h <= userInput) {
    // ...
    // }
}