实验指导书实验异常处理与异常类.doc

实验7异常解决与异常类一.实验目的及实验环境1理解Java异常的基本概念和解决机制。2掌握Java异常解决的方法（抛出和捕获异常；try、throw、throws、catch语句和finally的用法）3理解异常类的作用，掌握创建异常类的方法。二.实验内容1基本内容（实验前请及时熟悉如下相关内容）1）Java的异常解决机制2）异常类的应用3）常见的异常(除数为零等)4）多异常解决5）由方法抛出异常6）必须要捕获的异常2综合实验：2.1(Y.DanielLiang英文版第10版P488：12.2*(InputMismatchException))(Y.DanielLiang英文版八版P456：13.2*)(NumberFormatException)Writeaprogramthatpromptstheusertoreadtwointegersanddisplaystheirsum.Yourprogramshouldprompttheusertoreadthenumberagainiftheinputisincorrect.2.2(Y.DanielLiang英文版第10版P488：12.3*)(Y.DanielLiang英文版八版P456：13.3*)(ArrayIndexOutBoundsException)Writeaprogramthatmeetsthefollowingrequirements:■Createanarraywith100randomlychosenintegers.■Prompttheusertoentertheindexofthearray,thendisplaythecorrespondingelementvalue.Ifthespecifiedindexisoutofbounds,displaythemessageOutofBounds.2.3(Y.DanielLiang英文版第10版P488：12.4*)(Y.DanielLiang英文版八版P456：13.4*)(IllegalArgumentException)ModifytheLoanclassinListing10.2tothrowIllegalArgumentExceptioniftheloanamount,interestrate,ornumberofyearsislessthanorequaltozero.2.4(Y.DanielLiang英文版第10版P488：12.5*)(Y.DanielLiang英文版八版P456：13.5*)(IllegalTriangleException)Exercise11.1definedtheTriangleclasswiththreesides.Inatriangle,thesumofanytwosidesisgreaterthantheotherside.TheTriangleclassmustadheretothisrule.CreatetheIllegalTriangleExceptionclass,andmodifytheconstructoroftheTriangleclasstothrowanIllegalTriangleExceptionobjectifatriangleiscreatedwithsidesthatviolatetherule,asfollows:/**Constructatrianglewiththespecifiedsides*/publicTriangle(doubleside1,doubleside2,doubleside3)throwsIllegalTriangleException{//Implementit}三、程序清单及结果：1，package异常解决;importjava.util.Scanner;publicclasstext1{publicstaticvoidmain(String[]args){//TODOAuto-generatedmethodstubinta,b;Scanners=newScanner(System.in);System.out.println("readtwointegers:");while(true){try{a=s.nextInt();b=s.nextInt();System.out.printf("%d",a+b);}catch(Exceptione){System.out.println("readthenumberagain");s.nextLine();}}}}2package异常解决;importjava.util.Scanner;publicclasstext2{publicstaticvoidmain(