摘要： import java.util.Date; public class E413 { public static void main(String args[]){ Date date=new Date(); System.out.printf("Time: \n%s",date); }}结果：Time: Fri Apr 05 11:19:31 CST 2013 阅读全文

摘要： package tom.jiafei; class Tom{ void speak(){ System.out.println("Tom类在tom.jiafei包中"); } } public class E12 { public static void main(String args[]){ Tom cat=new Tom(); cat.speak(); System.out.println("E412类也在tom.jfiia包中"); }} 阅读全文

摘要： public class Tom { int leg; Tom(int n){ cry(); leg=n; 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); }}结果是我是Tom，我现在有0条腿我是Tom，我现在有4条腿 阅读全文

摘要： 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 kkkkk { public static void main(String args[]){ People zhang=new People(); System.out.println("面积：&quo 阅读全文

摘要： 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(){doubl 阅读全文

摘要： class Jerry{int leg;Jerry (int n){leg=n;}void setLeg(int n){leg=n;}int getLeg(){return leg;}}class Tom{void f(Jerry mouse){mouse.setLeg(12);System.out.println("在执行f时,参数mouse修改了自己的leg的值");System.out.println("当前参数mouse的成员leg的值: "+mouse.getLeg());mouse.setLeg(12);}}public class Exam 阅读全文

摘要： class Tom{void f(int x,double y){x=x+1;y=y+1;System.out.printf("x y : %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 x y: %d,%3.2f\n",x,y);}} 阅读全文

摘要： class Computer{double x,y;static double max(double a,double b){return a>b?a:b;}}class Example4_6{public static void main(String args[]){double max=Computer.max(12,45);System.out.println(max);}} 阅读全文

摘要： class Tom{final int MAX=100;static final int MIN=20;}public class Example4_5{public static void main(String args[]){System.out.println(Tom.MIN);Tom cat=new Tom();int x=0;x=Tom.MIN+cat.MAX;System.out.println(x);}} 阅读全文

摘要： 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;}}class Example4_4{ public static void main(String args[]){ Lader.bottom=60; Lader laderOne,laderTwo;.. 阅读全文