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public class Test{
public static void main(String args[]){
System.out.println(0.05+0.01);
System.out.println(1.0-0.42);
System.out.println(4.015*100);
System.out.println(123.3/100);
}
};
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0.060000000000000005
0.5800000000000001
401.49999999999994
1.2329999999999999
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public double round(double value){&
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public class HelloWorldApp { //an application
public static void main (String args[ ]){
System.out.println("Hello World!");
}
}
± ......
import java.util.regex.*;
public final class RegExpValidator
{
/**
* ÑéÖ¤ÓÊÏä
* @param ´ýÑéÖ¤µÄ×Ö·û´®
* @return Èç¹ûÊÇ·ûºÏµÄ×Ö·û´®,·µ»Ø <b>true </b>,·ñÔòΪ <b>false </b>
*/
public static boolean isEmail(String str)
{ ......
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import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* ÓÃÓÚµÄʹ Browser ²» ......
import java.util.Date;
class Dog{
private String name;
private Date birthday;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getBirthday() {
return b ......
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import java.io.File;
public class ListFile {
public static void main(String[] args) {
// TODO Auto-generated method stub
String path = "C:/Inetpub";
File f = new File(path);
list(f);
}
publ ......