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public class Tom{int leg;Tom(int n){this.cry();leg=n;this.cry();}void cry(){ System.out.println("我是Tom,我现在有"+leg+"条腿");}public static void main(String args[]){Tom cat=new Tom(4);}}import tom.jiafei.*;public class Example4_14{ public static void main(String args[]){ SquareEquation 阅读全文
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class People{double getArea(double x,int y){return x*y;}int getArea(int x,double y){return (int)(x*y);}double getArea(float x,float y,float z){ return(x*x+y*y+z*z)*2.0;}}public class Example4_10{public static void main(String args[]){People zhang=new People();System.out.println("面积:"+zhang 阅读全文
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class Circle{double radius;Circle(double r){radius=r;}double computerArea(){return 3.14*radius*radius;}void setRadius(double newRadius){radius=newRadius;}double getRadius(){return radius;}}class Cone{Circle bottom;double height;Cone(Circle c,double h){ bottom=c; height=h;}double computerVolume(){dou 阅读全文
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class Tom{void f(int x,double y){ x=x+1; y=y+1;System.out.printf("参数x和y的值分别是:%d,%3.2f\n",x,y);}}public class Example4_7{ public static void main(String args[]){ int x=10; double y=12.58; Tom cat=new Tom(); cat.f(x,y); System.out.printf("main方法中x和y的值仍然分别是:%d,%3.2f\n",x,y);}}class 阅读全文
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class Lader{double above,height;static double bottom;void setAbove(double a){above =a;} void setBottom(double b){ bottom =b;}double getAbove(){return above;}double getBottom(){return bottom; }} public class Example4_4{ public static void main(String args[]){ Lader.bottom=60; Lader laderOne,laderTwo; 阅读全文
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public class ComputerCircleArea{public static void main(String args[]){double radius;double area;radius=163.16;area=3.14*radius*radius;System.out.printf("半径是%5.3f的圆的面积:\n%5.3f\n",radius,area);}}class Circle{double radius;double getArea(){ double area=3.14*radius*radius; return area;}}publi 阅读全文
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public class Example3_7{ public static void main(String args[]){ int sum=0,i=0,max=8888,number=7; while(true){ i++; sum=sum+i; if(sum>=max) break; } System.out.println("1+2+...n<"+max+"的最大整数n是:"+(i-1)); for(i=1,max=200,sum=0;i<=max;i++){ if(i%number!=0){ continue; } sum= 阅读全文
摘要：
public class Example3_5{public static void main(String args[]){ double sum=0,item=1; int i=1; while(i<=1000){ sum=sum+item; i++; item=item*(1.0/i); } sum=sum+1; System.out.println("e="+sum); sum=0; i=1; item=1; do{ sum=sum+item; i++; item=item*(1.0/i); }while(i<=1000); sum=sum+1; Sys 阅读全文
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import java.util.*;public class Example3_3{ public static void main(String args[]){ Scanner reader=new Scanner(System.in); double a=0,b=0,c=0; System.out.print("输入边a:"); a=reader.nextDouble(); System.out.print("输入边b:"); b=reader.nextDouble(); System.out.print("输入边c:"); 阅读全文
摘要：
import java.util.*;public class A{public static void main(String args[]){ Scanner reader=new Scanner(System.in);？？？？？？？？？？？？？？？？ int mul=1; while(reader.hasNextInt()) { int x=reader.nextInt(); mul=mul*x; System.out.printf("%d整数的乘积为%d\n",mul);}} 阅读全文