急！！！JAVA課堂實(shí)驗(yàn)編程，求答案！！追分急！！

純手打，2.（3）沒(méi)搞清那個(gè)命令行是什么意思，所以沒(méi)寫(xiě)

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package student;

public class Student {

private String college;

private String major;

private String classes;

private String name;

private int oop;

private int network;

private int sql;

private int sum;

//無(wú)參構(gòu)造函數(shù)

public Student(){}

//有參構(gòu)造函數(shù)

public Student( String college,

String major, String classes,

String name, int oop, int network,

int sql) {

super();

this.college = college;

this.major = major;

this.classes = classes;

this.name = name;

this.oop = oop;

this.network = network;

this.sql = sql;

}

//成員方法

public int sum(){

return oop+network+sql;

}

//getter,setter方法

public String getCollege() {

return college;

}

public void setCollege(String college) {

this.college = college;

}

public String getMajor() {

return major;

}

public void setMajor(String major) {

this.major = major;

}

public String getClasses() {

return classes;

}

public void setClasses(String classes) {

this.classes = classes;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getOop() {

return oop;

}

public void setOop(int oop) {

this.oop = oop;

}

public int getNetwork() {

return network;

}

public void setNetwork(int network) {

this.network = network;

}

public int getSql() {

return sql;

}

public void setSql(int sql) {

this.sql = sql;

}

//toString方法

@Override

public String toString() {

return "姓名："+getName()+" "+"學(xué)院："+getCollege()+" "+"專業(yè)："+getMajor()

+" "+"班級(jí)"+getClasses()+" "+"總成績(jī)："+sum();

}

}

//測(cè)試類

package student;

import java.util.Scanner;

public class MyStudent {

public static void main(String[] args) {

//2.(1)

Student s=new Student();

s.setName("張三");

s.setCollege("南大");

s.setMajor("軟件技術(shù)");

s.setClasses("軟件1班");

s.setOop(89);

s.setNetwork(86);

s.setSql(99);

System.out.println(s);

System.out.println("------------------------------------"

+ "--------------------------------------");

//2.(2)

Student s1=new Student("南大","軟件技術(shù)","軟件1班","李四", 88,98, 91);

System.out.println(s1);

System.out.println("-------------------------------"

+ "-----------------------------------------");

//2.(3)

Scanner a=new Scanner(System.in);

System.out.println("請(qǐng)輸入學(xué)院：");

String college=a.next();

System.out.println("請(qǐng)輸入專業(yè)：");

String major=a.next();

System.out.println("請(qǐng)輸入班級(jí)：");

String classes=a.next();

System.out.println("請(qǐng)輸入姓名：");

String name=a.next();

System.out.println("請(qǐng)輸入面向?qū)ο蟪绦蛟O(shè)計(jì)成績(jī)：");

int oop=a.nextInt();

System.out.println("請(qǐng)輸入網(wǎng)絡(luò)原理成績(jī)：");

int network=a.nextInt();

System.out.println("請(qǐng)輸入姓名數(shù)據(jù)庫(kù)成績(jī)：");

int sql=a.nextInt();

Student s2=new Student(college,major,classes,name,oop,network,sql);

System.out.println(s2);

}

}

java實(shí)驗(yàn)題，求代碼和運(yùn)行方式！

下面是第一題，采納此答案發(fā)第二題代碼

========分割線=========

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.util.Scanner;

public class Q1 {

public static void main(String[] args) {

try {

Scanner scanner=new Scanner(System.in);

String data = scanner.nextLine();

File file = new File("java\\code");

if (!file.exists()) {

file.mkdirs();

}

File file1=new File(file,"mydata.txt");

if (!file1.exists()) {

file1.createNewFile();

}

FileWriter fw = new FileWriter(file1.getAbsoluteFile());

BufferedWriter bw = new BufferedWriter(fw);

bw.write(data);

bw.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

java代碼示例

importjava.awt.*;importjava.awt.event.*;classShopFrameextendsFrameimplementsActionListener{Labellabel1,label2,label3,label4;Buttonbutton1,button2,button3,button4,button5;TextAreatext;Panelpanel1,panel2;staticfloatsum=0.0f;ShopFrame(Strings){super(s);setLayout(newBorderLayout());label1=newLabel("面紙：3元",Label.LEFT);label2=newLabel("鋼筆：5元",Label.LEFT);label3=newLabel("書(shū)：10元",Label.LEFT);label4=newLabel("襪子：8元",Label.LEFT);button1=newButton("加入購(gòu)物車");button2=newButton("加入購(gòu)物車");button3=newButton("加入購(gòu)物車");button4=newButton("加入購(gòu)物車");button5=newButton("查看購(gòu)物車");text=newTextArea("商品有："+"\n",5,10);text.setEditable(false);addWindowListener(newWindowAdapter(){publicvoidwindowClosing(WindowEvente){System.exit(0);}});button1.addActionListener(this);button2.addActionListener(this);button3.addActionListener(this);button4.addActionListener(this);button5.addActionListener(this);panel1=newPanel();panel2=newPanel();panel1.add(label1);panel1.add(button1);panel1.add(label2);panel1.add(button2);panel1.add(label3);panel1.add(button3);panel1.add(label4);panel1.add(button4);panel2.setLayout(newBorderLayout());panel2.add(button5,BorderLayout.NORTH);panel2.add(text,BorderLayout.SOUTH);this.add(panel1,BorderLayout.CENTER);this.add(panel2,BorderLayout.SOUTH);setBounds(100,100,350,250);setVisible(true);validate();}publicvoidactionPerformed(ActionEvente){if(e.getSource()==button1){text.append("一個(gè)面紙、");sum=sum+3;}elseif(e.getSource()==button2){text.append("一只鋼筆、");sum=sum+5;}elseif(e.getSource()==button3){text.append("一本書(shū)、");sum=sum+10;}elseif(e.getSource()==button4){text.append("一雙襪子、");sum=sum+8;}elseif(e.getSource()==button5){text.append("\n"+"總價(jià)為："+"\n"+sum);}}}publicclassShopping{publicstaticvoidmain(String[]args){newShopFrame("購(gòu)物車");}}我沒(méi)用Swing可能顯示不出來(lái)你的效果。不滿意得話我在給你編一個(gè)。

Java實(shí)驗(yàn)，代碼怎么寫(xiě)？

Shape.java接口代碼

public interface Shape {

public static final double PI = 3.14d;

public double area();

}

Circle.java圓類代碼

public class Circle implements Shape {

private double radius;

public Circle(double radius) {

? this.radius = radius;

}

@Override

public double area() {

? return PI * this.radius * this.radius;

}

public double perimeter() {

? return 2 * PI * this.radius;

}

}

Cylinder.java圓柱體類代碼

public class Cylinder extends Circle {

private double height;

public Cylinder(double radius, double height) {

? super(radius);

? this.height = height;

}

public double area() {

? return 2 * super.area() + super.perimeter() * this.height;

}

public double volume() {

? return super.area() * this.height;

}

}

X5_3_6.java主類代碼

public class X5_3_6 {

public static void main(String[] args) {

? Circle cir1 = new Circle(5);

? System.out.println("圓的面積為：" + cir1.area());

? System.out.println("圓的周長(zhǎng)為：" + cir1.perimeter());

? Cylinder cy1 = new Cylinder(10, 15);

? System.out.println("圓柱體的表面積為：" + cy1.area());

? System.out.println("圓柱體的體積為：" + cy1.volume());

}

}

上面是我寫(xiě)的代碼，下圖是執(zhí)行結(jié)果，麻煩看一下，是否可以。

當(dāng)前名稱：java課堂實(shí)訓(xùn)代碼,Java程序設(shè)計(jì)實(shí)訓(xùn)
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