所以我想知道是否有人可以告诉我如何将一个方法中的变量调用/引用为另一方法。例如,
public static void main(String[] args)
{
System.out.println("Welcome to the game of sticks!");
playerNames();
coinToss();
}
public static void playerNames()
{
Scanner input = new Scanner(System.in);
System.out.println();
System.out.print("Enter player 1's name: ");
String p1 = input.nextLine();
System.out.print("Enter player 2's name: ");
String p2 = input.nextLine();
System.out.println();
System.out.println("Welcome, " + p1 + " and " + p2 + ".");
}
public static void coinToss()
{
System.out.println("A coin toss will decide who goes first:");
System.out.println();
Random rand = new Random();
int result = rand.nextInt(2);
result = rand.nextInt(2);
if(result == 0)
{
System.out.println(p1 + " goes first!");
}
else
{
System.out.println(p2 + " goes first!");
}
}
我想在coinToss()内使用来自playerNames()的p1和p2,所以我可以简单地宣布谁先进入,但我不知道如何调用变量。
我的问题与其他问题并没有什么不同,但是我无法理解其他人给出的答案。一旦我发布了这个,我就从一群好心人那里得到了答案:)
答案 0 :(得分:0)
我假设您是Java的新手,因为您似乎不熟悉 fields 的概念(即,您可以将变量放在 outside 方法中)。
public class YourClass {
static String p1;
static String p2;
public static void main(String[] args)
{
System.out.println("Welcome to the game of sticks!");
playerNames();
coinToss();
}
public static void playerNames()
{
Scanner input = new Scanner(System.in);
System.out.println();
System.out.print("Enter player 1's name: ");
p1 = input.nextLine();
System.out.print("Enter player 2's name: ");
p2 = input.nextLine();
System.out.println();
System.out.println("Welcome, " + p1 + " and " + p2 + ".");
}
public static void coinToss()
{
System.out.println("A coin toss will decide who goes first:");
System.out.println();
Random rand = new Random();
int result = rand.nextInt(2);
result = rand.nextInt(2);
if(result == 0)
{
System.out.println(p1 + " goes first!");
}
else
{
System.out.println(p2 + " goes first!");
}
}
}
答案 1 :(得分:0)
您要搜索的被称为实例变量,请检查一下。 https://www.tutorialspoint.com/java/java_variable_types.htm
答案 2 :(得分:0)
我要做的就是在外部创建实例/静态变量!像这样:
static String name1;
static String name2;
这很容易。谢谢大家的帮助!