我是安德鲁,我刚刚开始学习Java并编写了代码。我花了大约两个小时,但效果很好。它基本上允许您输入性别,然后输入年龄,然后通过一堆不同的设置信息告诉您是否年龄。这有点基本,没用,但是这是我的第一个项目:p在这里。

import java.util.Scanner;
class main
{
public static void main(String[] args)
{
    while(true){

Scanner User = new Scanner(System.in);
double gender;
System.out.println("Enter Your Gender. 1 = Men 2= Women");
gender = User.nextDouble();
if(gender<1 || gender>2 || gender<2 && gender>1)
{
System.out.println("That's a gender... Enter Your Gender. 1 = Men 2=
Women");
gender = User.nextDouble();
}

{
if(gender>1 && gender<3)
{System.out.println("You are a Women");
double age;
System.out.println("Enter Your Age.");
age = User.nextDouble();

    if(age<0){System.out.println("You Arn't Even Born...");}
    else{
    if(age>0 && age<13){System.out.println("You are so young you shouldn't
be doing this!");}
    else{
    if(age>12 && age<21){System.out.println("You're really young!");}
    else{
    if(age>20 && age<25){System.out.println("These are the best years!");}
    else{
    if(age>24 && age<46){System.out.println("There is still a lot more in
store for you!");}
    else{
    if(age>45 && age<61){System.out.println("Enjoy your life, while you
still have many years left");}
    else{
    if(age>60 && age<71){System.out.println("Life is starting to fade away,
Live it to the fullest!");}
    else{
    if(age>70 && age<81){System.out.println("I would start preparing for the
worst...");}
    else{
    if(age>80 && age<101){System.out.println("You might want to say your
final goodbyes...");}
    else{
    if(age>100){System.out.println("How are you not dead yet? WHAT IS YOUR
SECRET!!!");}
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
if(gender<2 && gender>0)
{System.out.println("You are a Man");
double agetwo;
System.out.println("Enter Your Age.");
agetwo = User.nextDouble();

    if(agetwo<0){System.out.println("You Arn't Even Born...");}
    else{
    if(agetwo>0 && agetwo<8) {System.out.println("You are so young you
shouldn't be doing this!");}
    else{
    if(agetwo>7 && agetwo<21) {System.out.println("You're really young!");}
    else{
    if(agetwo>20 && agetwo<25){System.out.println("You are still really
young!");}
    else{
    if(agetwo>24 && agetwo<31){System.out.println("Enjoy these golden
days!");}
    else{
    if(agetwo>30 && agetwo<46){System.out.println("Life is still burning as
bright as ever!");}
    else{
    if(agetwo>45 && agetwo<66){System.out.println("There is still gas in the
can!");}
    else{
    if(agetwo>65 && agetwo<71){System.out.println("Live every day to the
fullest, you still have many left!");}
    else{
    if(agetwo>70 && agetwo<85){System.out.println("There are preperations
you should make");}
    else{
    if(agetwo>84 && agetwo<95){System.out.println("Life may end any day, Be
ready for it");}
    else{
    if(agetwo>94){System.out.println("You shouldn't be alive.... Tell me
your secret...");}
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}

            }
        }
    }
}

最佳答案

很好,但是对于您的下一个项目:

1-您可以在类而不是方法中声明Scanner。您不需要一次在while循环中声明一次。

2-变量gender可以声明为booleanint

3-您可以使用if(gender == 2)代替if(gender>1 && gender<3)

4-您可以使用else if{代替else{ if{

5-您不需要两次声明age变量。你可以做一次。

6-代码缩进非常有用(尝试使用它)

例如

public void test(){
    if(condition){
        //some code here
    } else {
        //some code here
    }
}


还有许多您可以在clean code robert cecil martin中学习的东西

10-07 13:35
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