如何在按钮之间使用相同的变量？

Question

我在Java中创建了一个岩石剪刀游戏，但是我不知道如何使用相同的变量在3个不同的按钮（岩石，纸剪刀）之间工作。我使用如果循环进行胜利损失并在每个按钮中绑扎，这样我就可以轻松地将1添加到一个变量中，但是我不确定如何使其在代码中到处都可以工作，甚至可以做到这一点。

if (playerChoice.equals(randomChoice)) //If player chose the same thing as the computer
{
    //TIE
    System.out.println("user tied"); //Tie the game with output message in console
    lblGameStatus.setText("The game tied!"); //Output to the user for the result of the game
}
if (randomChoice.equals("paper")) //and if the computer chose paper
{
    //ROCK VS PAPER
    System.out.println("user won");//The player wins, with output message in console
    lblGameStatus.setText("You Won!"); //Output to the user for the result of the game
    
}
else if (randomChoice.equals("scissors")) //if the computer chose scissors instead of paper
{
    //ROCK VS SCISSORS
    System.out.println("user lost"); //the computer wins, display output message in console
    lblGameStatus.setText("You Lost!"); //Output to the user for the result of the game
}