java03

运用Java语句来将计算园面积的问题函数化，来让输出更为简单。
代码展示

public class task01_1 {
    public static void main(String[] args) {
        double r, s;
        final double PI = 3.1415926;
        Scanner sc = new Scanner(System.in);

        System.out.print("r = ");
        r = sc.nextDouble();

        s = PI * r * r;

        System.out.println("s = " + s);
    }
}

案例展示

代码展示

public class task01_2 {
    public static void main(String[] args) {
        String chineseName, englishName;
        Scanner sc = new Scanner (System.in);

        System.out.print("中文名字：");
        chineseName = sc.next();
        System.out.print("英文名字：");
        englishName = sc.next();

        System.out.println("亲爱的" + chineseName);
        System.out.println("Dear" + englishName);
    }
}

案例演示

代码展示

public class task01_3 {
    public static void main(String[] args) {
        String chineseName, englishName;
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        try {
            System.out.print("中文名字：");
            chineseName = br.readLine();
            System.out.print("英文名字：");
            englishName = br.readLine();
            System.out.println("亲爱的" + chineseName);
            System.out.println("Dear " + englishName);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

案例展示