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); } }