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1、一.实验目的学会安装并熟悉ＪＤＫ，ＪＲＥ，ＢｌｕｅＪ软件及其相应的环境变量的设置，会编一些简单的java入门小程序。二.实验内容实验题目一：对“HelloWorld”程序进行改造，能够显示一张发给朋友的贺卡。格式如下：******************************张三,你好！祝你学习愉快！ 你的好朋友：李四2012年10月10日********************************1．解题要点及算法分析在Ｈｅｌｌｏｗｏｒｄ程序代码中把输出改成所需要输出的字符串即可。2．程序源代码publicclasscard{publicstaticvoidma
2、in(String[]args){System.out.println("******************************张三，你好！祝你学习愉快！你的好朋友：李四2012年10月10日******************************");}}3．实验结果otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Star
3、tingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSe
4、cretary,Ministersand实验题目二：完成课堂上的圆类和主类1．程序源代码packagemyhome;importjava.util.*;publicclass主类{publicstaticvoidmain(Stringa[]){Scannersc=newScanner(System.in);圆类圆1=new圆类();System.out.print("请输入半径1：");圆1.半径=sc.nextDouble();doublearea1=圆1.面积();System.out.printf("圆1的面积=%10.2fr",area1);圆类圆2=ne
5、w圆类();System.out.print("请输入半径2：");圆2.半径=sc.nextDouble();doublearea2=圆2.面积();System.out.printf("圆2的面积=%10.2fr",area2);圆类圆3=new圆类();System.out.print("请输入半径3：");圆3.半径=sc.nextDouble();doublearea3=圆3.面积();System.out.printf("圆3的面积=%10.2fr",area3);}}packagemyhome;publicclass圆类otherstaffof
6、theCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateente
7、rprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand{privatedouble半径;publicstaticintcount;finalintMAXVALUE;protectedint坐标;public圆类(){半径=0;MAXVALUE=10000;}public圆类(double半径2){半径=半径2;M
