资源描述：
《实验3 JAVA概述》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、姓名柳华班级信科1002班学号100602207----------------------------------------------------------------------------------------------------------------------实验三抽象/分装/类实验时间第6周星期4一、实验目的1．了解Java中的类，域；2．了解类的创建，类的方法；二、实验预备工作1．复习第4章JAVA相关的内容，掌握相应的知识。三、实验内容（1）importjava.io.*;publicclassUsenumber{publicstati
2、cvoidmain(Stringargs[]){Studentstu1=newStudent(100602207,"1002","柳华","女",21);System.out.println(stu1.toString());stu1.changeAge(10);}}classStudent{longstuNumber;StringstuName;StringstuSex;intstuYear;StringstuClass;Student(longa,Stringb,Stringc,Stringd,inte){stuNumber=a;stuClass=b;stuNa
3、me=c;stuSex=d;stuYear=e;}publicvoidchangeAge(intage){stuYear=age;}publicStringtoString(){Strings="学号:"+stuNumber+"班级:"+stuClass+"姓名:"+stuName+"性
别:"+stuSex+"年龄："+stuYear;returns;}}（2）importjava.applet.Applet;importjava.awt.*;importjava.awt.event.*;publicclassUsePhoneCardApplete
4、xtendsAppletimplementsActionListener{TextFieldcardNum;TextFieldpasswd;TextFieldbal;TextFieldconnectNum;Labell1,l2,l3,l4;Buttonbtn;longcardNumber;privateintpassword;doublebalance;StringconnectNumber;PhoneCardp1=newPhoneCard(1001001,8888,1000,"200");publicvoidinit(){cardNum=newTextField(
5、10);passwd=newTextField(10);bal=newTextField(10);connectNum=newTextField(10);l1=newLabel("卡号");l2=newLabel("密码");l3=newLabel("余额");l4=newLabel("连接号");btn=newButton("确定");add(l1);add(cardNum);add(l2);add(passwd);add(l3);add(bal);add(l4);add(connectNum);add(btn);btn.addActionListener(thi
6、s);}publicvoidactionPerformed(ActionEvente){cardNumber=Long.valueOf(cardNum.getText()).longValue();password=Integer.valueOf(passwd.getText()).intValue();balance=Double.valueOf(bal.getText()).doubleValue();connectNumber=connectNum.getText();p1.cardNumber=cardNumber;p1.setPassword(passwo
7、rd);p1.balance=balance;p1.connectNumber=connectNumber;repaint();}publicvoidpaint(Graphicsg){g.drawString(p1.toString(),20,80);}}classPhoneCard{longcardNumber;privateintpassword;doublebalance;StringconnectNumber;booleanconnected;PhoneCard(longcn,intpw,doubleb,Strings){cardNumber=cn;pa
