J﹀行天下~

今天在看书的时候，看见了“静态导入”的这个概念，上网一查才知道是JDK5.0的新特性，真是孤陋寡闻了，所以好好学习了一下。 静态导入，在你自己的类中使用静态导入，可以让你使用其它类中定义的类方法和类变量，而且这些类方法和类变量就像在本地定义的一样。也就是说，静态导入允许您在调用其它类中定义的静态成员时，可以忽略类名。写一段代码理解一下（[color=red]代码是最好的教科书[/...

[code="java"]10 public class Hello{11 String title;12 int value;13 public Hello(){14 title += " world";15 }16 public Hello(int value){17 this.value = value;18 title = "Hello...

[code="java"] /** * * @author yaoyuan */10 package com.sun.scjp;11 public class Geodetics{12 public static final double DIAMETER = 12756.32; //kilometers13 }[/code]Which two corr...

[code="java"] /** * * @author yaoyuan */1 import java.util.*;2 public class TestSet{3 enum Example{ONE,TWO,THREE}4 public static void main(String[] args){5 Collection coll = ne...

Place the correct Code in the Code Sample to achieve the expected results.Expected results:Output :1 2 4 8 16 32Code Sample [code="java"]int[] y = {1,2,4,8,16,32}; System.out.print("Outpu...

[code="java"] /** * * @author yaoyuan */11 public static void test(String str){12 if(str == null | str.length() ==){13 System.out.println("String is empty");14 }else{15 System....

[code="java"] /** * * @author yaoyuan */11 public static int sum(List list){12 int sum = 0;13 for(Iterator iter = list.iterator();iter.hasNext();){14 int I = ((Integer)iter.next()).i...

[code="java"] /** * * @author yaoyuan */public class A{ public void method1(){ B b = new B(); b.method2();5 //more code here }}public class B{ public void method2(){ C ...

[code="java"] /** * * @author yaoyuan */public class CertKiller{ int x = 12; public void method(int x){ x += x; System.out.println(x); }}Given the exhibit:21 test t= n...

[code="java"] /** * * @author yaoyuan */12 public class Certkiller5{13 public static void main(String[] yahoo){14 for(int x=1;x

/** * * @author yaoyuan *//***Which three statements are true?(choose three)**A A final method in class x can be abstract if and only if x is abstract*B A protected method in c...

[code="java"] /** * * @author yaoyuan */public class Main implements Runnable{ public void run(){ System.out.print("running"); } public static void main(String[] args){ Thread t...

[code="java"] /** * * @author yaoyuan */public class Foo implements Serializable{ public int x, y; public Foo(int x, int y){ this.x = x; this.y = y; ...

[color=blue]最近在接触设计模式，看了网上的很多资料，自己也练习了一下[/color]工厂模式定义:提供创建对象的接口.工厂模式中有:1. 工厂方法(Factory Method) 2.抽象工厂(Abstract Factory)工厂方法：[code="java"] public class Factory{ 　　pub...

[code="java"]1public class A{2 private int counter = 0;3 4 public static int getInstanceCount(){5 return counter;6 }7 8 public A(){9 counter++;10 }11}Given this code from c...