Java！！！(在线求救)

一朵云☁ 2019-05-16 10:46:18

按要求编写应用程序, (1)创建一个叫做学生的类：属性:姓名、年龄、性别、身高；行为:说话、计算加法、改名编写能为所有黑性量值的构造方法； (2)创建主类:创建一个对象:名叫张三”,性别男”,年龄18岁,身高180:让该对象调用成员方法:说出你好1

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朝霞清辉 2019-05-16

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不用私有的话就不需要get，set方法了，其他就一样

朝霞清辉 2019-05-16

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引用 2 楼一朵云☁ 的回复:

[quote=引用 1 楼朝霞清辉的回复:]

package com.gbicc;

/**
 * @Description: Student
 * @Author: ding
 * @Date: 2019/5/16 10:57
 * @Version: 1.0
 */


public class Student {

    private String name;
    private Integer age;
    private String sex;
    private Integer height;

    public void say(String string) {
        System.out.println(string);
    }

    public int addCalculation(int a, int b) {
        return a + b;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public Integer getHeight() {
        return height;
    }

    public void setHeight(Integer height) {
        this.height = height;
    }

    public void changeName(String newName) {
        this.name=newName;
    }

    public Student(String name, Integer age, String sex, Integer height) {
        this.name = name;
        this.age = age;
        this.sex = sex;
        this.height = height;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", sex='" + sex + '\'' +
                ", height=" + height +
                '}';
    }
}

package com.gbicc;

/**
 * @Description: Test
 * @Author: ding
 * @Date: 2019/5/16 11:02
 * @Version: 1.0
 */


public class Test {
    public static void main(String[] args) {
        Student student = new Student("张三",18,"男",180);
        student.changeName("ding");
        System.out.println("student = " + student);
    }
}

如果，不用私有，用公有的话，该怎么写？[/quote] 什么意思？

一朵云☁ 2019-05-16

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引用 1 楼朝霞清辉的回复:

package com.gbicc;

/**
 * @Description: Student
 * @Author: ding
 * @Date: 2019/5/16 10:57
 * @Version: 1.0
 */


public class Student {

    private String name;
    private Integer age;
    private String sex;
    private Integer height;

    public void say(String string) {
        System.out.println(string);
    }

    public int addCalculation(int a, int b) {
        return a + b;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public Integer getHeight() {
        return height;
    }

    public void setHeight(Integer height) {
        this.height = height;
    }

    public void changeName(String newName) {
        this.name=newName;
    }

    public Student(String name, Integer age, String sex, Integer height) {
        this.name = name;
        this.age = age;
        this.sex = sex;
        this.height = height;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", sex='" + sex + '\'' +
                ", height=" + height +
                '}';
    }
}

package com.gbicc;

/**
 * @Description: Test
 * @Author: ding
 * @Date: 2019/5/16 11:02
 * @Version: 1.0
 */


public class Test {
    public static void main(String[] args) {
        Student student = new Student("张三",18,"男",180);
        student.changeName("ding");
        System.out.println("student = " + student);
    }
}

如果，不用私有，用公有的话，该怎么写？

朝霞清辉 2019-05-16

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package com.gbicc;

/**
 * @Description: Student
 * @Author: ding
 * @Date: 2019/5/16 10:57
 * @Version: 1.0
 */


public class Student {

    private String name;
    private Integer age;
    private String sex;
    private Integer height;

    public void say(String string) {
        System.out.println(string);
    }

    public int addCalculation(int a, int b) {
        return a + b;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public Integer getHeight() {
        return height;
    }

    public void setHeight(Integer height) {
        this.height = height;
    }

    public void changeName(String newName) {
        this.name=newName;
    }

    public Student(String name, Integer age, String sex, Integer height) {
        this.name = name;
        this.age = age;
        this.sex = sex;
        this.height = height;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", sex='" + sex + '\'' +
                ", height=" + height +
                '}';
    }
}

package com.gbicc;

/**
 * @Description: Test
 * @Author: ding
 * @Date: 2019/5/16 11:02
 * @Version: 1.0
 */


public class Test {
    public static void main(String[] args) {
        Student student = new Student("张三",18,"男",180);
        student.changeName("ding");
        System.out.println("student = " + student);
    }
}

一朵云☁ 2019-05-16