java 定义一个三角形类并计算周长和面积

importjava.util.Date;importjavax.swing.JFrame;importjavax.swing.JTextField;publicclassTest{\x05publi

classCircle{\x09privatedoubler;\x09publicvoidsetR(doubler)\x09{\x09\x09this.r=r;\x09}\x09publicdoubl

classTriangle{inta,b,c,l;publicstaticvoidperimeter(){l=a+b+c;}}publicclassTriangleTest{publicstaticv

1.定义抽象类AbstractImageimportjava.awt.Graphics;publicabstractclassAbstractImage{publicabstractvoiddraw(

publicclassTriangle{intedge1;intedge2;intedge3;Triangle(inta,intb,intc){edge1=a;edge2=b;edge3=c;doub

classShape{voidarea(){}voidcircle(){}}publicclassTriangleextendsShape{floatarea(floati,floatj){retur

输出三角形的什么啊再问：周长再答：哦，这个简单importjava.util.Scanner;publicclassCircumference{publicstaticvoidmain(String[

publicclassTest{publicstaticvoidmain(String[]args){inta=1203;intsum=0;while(a/10!=0){sum

类似的问题,在知道里面不知道有多少.搜索一下.

importjava.util.Scanner;publicclassTest{publicstaticvoidmain(String[]args){System.out.print("请输入第一个整

test{publicstaticvoidmain(Stringargs[]){longsum=0,a=1;longi=1;while(i=1)sum=sum+a;i++;a=a*i;}System.

publicclassTest{\x05publicstaticvoidmain(String[]args){\x05\x05Rectangler=newRectangle(5,4);\x05\x05

packagecom.test;publicclassComplexNum{\x05//Z=a+bi\x05privateintRez;\x05//实部\x05privateintImz;\x05//

importjava.util.Scanner;publicclassjiechen{publicstaticvoidmain(String[]args){Scannerscanner=newScan

classClock{privateinthourse;privateintminute;privateintsecond;publicClock(){this.hourse=0;this.minut

publicclassTriangle{\x09inta;\x09intb;\x09intc;\x09publicTriangle(inta,intb,intc){\x09\x09this.a=a;\

publicclassCircle{privatedoubleradius;publicCircle(doubler){this.radius=r;}publicstaticvoidmain(Stri

publicclassRectangle{\x09\x09privateintw;\x09\x09privateinth;\x09\x09publicRectangle(){\x09\x09}\x09

publicclassJs{privatedoublea;privatedoubleb;privatedoublec;Js(doublea,doubleb,doublec){this.a=a;this

publicclassSquare{\x09publicstaticbooleanisValidate(inta,intb,intc){\x09\x09booleanflag=false;\x09\x