Java 高级计算器代码

以下是一个简单的 Java 高级计算器代码，可以进行基本的数学运算和三角函数运算：

import java.util.Scanner;
import java.lang.Math;

public class Calculator {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        double num1, num2, result;
        char operator;

        System.out.print("Enter first number: ");
        num1 = input.nextDouble();

        System.out.print("Enter operator (+, -, *, /, s, c, t): ");
        operator = input.next().charAt(0);

        if (operator == 's' || operator == 'c' || operator == 't') {
            num1 = Math.toRadians(num1);
        }

        if (operator == '+' || operator == '-' || operator == '*' || operator == '/') {
            System.out.print("Enter second number: ");
            num2 = input.nextDouble();

            switch (operator) {
                case '+':
                    result = num1 + num2;
                    System.out.println(num1 + " + " + num2 + " = " + result);
                    break;

                case '-':
                    result = num1 - num2;
                    System.out.println(num1 + " - " + num2 + " = " + result);
                    break;

                case '*':
                    result = num1 * num2;
                    System.out.println(num1 + " * " + num2 + " = " + result);
                    break;

                case '/':
                    result = num1 / num2;
                    System.out.println(num1 + " / " + num2 + " = " + result);
                    break;
            }
        } else {
            switch (operator) {
                case 's':
                    result = Math.sin(num1);
                    System.out.println("sin(" + num1 + ") = " + result);
                    break;

                case 'c':
                    result = Math.cos(num1);
                    System.out.println("cos(" + num1 + ") = " + result);
                    break;

                case 't':
                    result = Math.tan(num1);
                    System.out.println("tan(" + num1 + ") = " + result);
                    break;
            }
        }
    }
}

这个计算器可以进行基本的加、减、乘、除运算，以及三角函数的计算（输入 s、c、t 分别表示求正弦、余弦、正切）。需要注意的是，输入角度时需要将角度转换为弧度进行计算。