第十周作业

package rrrr;

public interface Fruit {

        class apple implements Fruit {

            public apple() {

                System.out.println("创建了一个苹果类对象");

            }

        }

        class grape implements Fruit {

            public grape() {

                System.out.println("创建了一个葡萄类的对象");

            }

        }

        class banana implements Fruit {

            public banana() {

                System.out.println("创建了一个香蕉类的对象");

            }

        }

    }
package rrrr;

import java.util.Scanner;

import rrrr.Fruit.apple;

import rrrr.Fruit.grape;

import rrrr.Fruit.banana;

public class Gardener {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        Gardener g = new Gardener();

        g.create();

    }

    public Fruit create() {

        Scanner sc = new Scanner(System.in);

        System.out.println("请输入水果名称");

        String name = sc.next();

        Fruit F = null;

        if (name.equals("苹果")) {

            F = new apple();

        } else if (name.equals("香蕉")) {

            F = new banana();

        } else if (name.equals("葡萄")) {

            F = new grape();

        }

        return F;

    }

}

　　

1.输入6位密码，再次输入密码，如果不够6位，提示，位数不对，如果两次不一致，提示两次密码不一致。

 

package ooo;

import java.util.Scanner;

public class Wyy {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入您的密码");
        String pass1 = sc.next();
        System.out.println("请再次输入密码");
        String pass2 = sc.next();
        if (pass1.length() > 0 && pass1.length() < 6) {
            System.out.println("位数不足");
            } else if (!pass1.equals(pass2)) {
                System.out.println("两次密码不一致");
                }
        }

}

　　

2.输入一个字符串，如果开头是ok并且包含no，那么输入错误。

 

 

package ooo;

import java.util.Scanner;

public class Wyy {

static Scanner sc = new Scanner(System.in);

public static void shuru() {

System.out.println("请输入一段字符");

String string = sc.next();

if (string.startsWith("ok") && string.contains("no")) {

System.out.println("输入错误");

} else {

System.out.println("输入正确");

}

System.out.println("是否从新输入？Y/N");

if (sc.next().equalsIgnoreCase("y")) {

panduan();

} else {

System.out.println("谢谢使用");

}

}

public static void panduan() {

shuru();

}

}
package ooo;

public class ttt {

public static void main(String[] args) {

// TODO Auto-generated method stub

Wyy w = new Wyy();

w.shuru();

}

}

 

1.输入三个单词，组合成pascal命名法的字符串

输入：STU

manage

system

输出

StuManageSystem 

可以考虑：charAt,touppercase,tolowercase等等。字符串连接+ concat。

package ooo;


import java.util.Scanner;

public class Wyy {

    

    public static void main(String[] args) {
    // TODO Auto-generated method stub

    Scanner sc = new Scanner(System.in);

    System.out.println("请输入第一段字符串");

    String s1 = sc.next();

    String string0 = s1.substring(0, 1);

    String string1 = s1.substring(1, 3).toLowerCase();

    System.out.println("请输入第二段字符串");

    String s2 = sc.next();

    String string2 = s2.substring(0, 1).toUpperCase();

    String string3 = s2.substring(1, 6);

    System.out.println("请输入第三段字符串");

    String s3 = sc.next();

    String string4 = s3.substring(0, 1).toUpperCase();

    String string5 = s3.substring(1, 6);

    System.out.println(string0 + string1 + string2 + string3 + string4 + string5);

    }

    }