W3School TIY Editor

public class Main {

  public static void main(String[] args) {

    // 创建不同数据类型的变量

    int items = 50;

    float costPerItem = 9.99f;

    float totalCost = items * costPerItem;

    char currency = '$';

​

    // 打印变量

    System.out.println("商品数量: " + items);

    System.out.println("单价: " + costPerItem + currency);

    System.out.println("总价 = " + totalCost + currency);

  }

}