Using Numbers with JAVA Programming
I'm about to fail JAVA and require expert solution to this problem:
When you take the year of the birth of Bill Clinton and add to it the year he took office plus his age at his last birthday, and then subtract the number of full years he has been in office, you get the number 3986 (or 3985 depending on the time of year in which you calculate). But when you add and subtract the similar figures for the leaders of Britain, and France, you get 3986 (or 3985) in each case! How can I solve this problem! Please help!
I'm about to fail JAVA and require expert solution to
this problem:
When you take the year of the birth of Bill Clinton
and add to it the year he took office plus his age at
his last birthday, and then subtract the number of
full years he has been in office, you get the number
3986 (or 3985 depending on the time of year in which
you calculate). But when you add and subtract the
similar figures for the leaders of Britain, and
France, you get 3986 (or 3985) in each case! How can
I solve this problem! Please help!
hehehe...you are a silly person...
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Create a Java program to read in an unknown number of lines from a data file. You will need to create the data file. The contents of the file can be found at the bottom of this document. This file contains a football team's name, the number of games they have won, and the number of games they have lost.
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3. Output to a file ("bottom.txt") a listing of all teams with a win percentage of .500 or lower. This file should contain the team name and the win percentage.
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5. Output in a message box: the team with the highest win percentage and the team with the lowest win percentage, each appropriately labeled. If there is a tie for the highest win percentage or a tie for the lowest win percentage, you must output all of the teams.
Dallas 5 2
Philadelphia 4 3
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static Scanner console = new Scanner(System.in);
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double best_pctg = -1.0;
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Scanner inFile = new Scanner(new FileReader("football.txt"));
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System.exit( 1 );
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fwinner = new PrintStream( new FileOutputStream( "winner.txt" ) );
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System.exit( 1 );
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while( rs.hasNext( ) )
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ls = new Scanner( inputrec ); /* prevents stumble if record has more than expected */
team = ls.next( );
wins = ls.nextInt();
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public class AMI
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int THE_CHAR_1 = '1';
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Thanks!Hi,
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if (ch == '\r' || ch == '\n')
lineNum++;
outfile.println();
outfile.println();
outfile.write("Example " + lineNum);
outfile.println();
outfile.write("in :");
outfile.println();
outfile.write("out:");
else
if (ch == THE_CHAR_0)
int output = ami.convert(ch);
outfile.write(output);
else
if (ch == THE_CHAR_1)
int output = ami.convert(ch);
outfile.write(output);
}//end while
infile.close();
outfile.close();
}catch (IOException ex) {}
}//main method
}//class AMIConverterThis is my AMI class
import java.io.*;
public class AMI
int THE_CHAR_0 = '0';
int THE_CHAR_1 = '1';
int total = '+';
int minus = '-';
int count = 0;
public int convert(int ch)
try
PrintWriter outfile = new PrintWriter("output.txt");
if (ch == THE_CHAR_0)
return ch;
else
if (ch == THE_CHAR_1)
count++;
if (count%2 == 1)
ch = total;
return (ch);
else
ch = minus;
return (ch);
}catch (FileNotFoundException e) {}
return ch;
}//method convert
}//class AMIAny help would be appreicated.
Thanks! -
Hi, I am writing a database program, and I decided I should try and use MySQL since many people have told me it is the best way to make a database. Does the java version that Sun provide come with the api to create mysql databases?
Also, I would like to know of a good tutorial that teaches MySQL with java.Hi, I am writing a database program, and I decided I
should try and use MySQL since many people have told
me it is the best way to make a database. Does the
java version that Sun provide come with the api to
create mysql databases?
You are more than a bit confused so please stop here until you understand the following.
JDBC is the API for communicating with relational databases in Java. It is not a database in and of itself but it can communicate with any database that provides JDBC API access in the form of a JDBC driver.
Also, I would like to know of a good tutorial that
teaches MySQL with java.The Sun tutorial on JDBC may be found here http://java.sun.com/docs/books/tutorial/jdbc/index.html
Your using (or not) MySQL is not relevent on this forum and any questions you have regarding MySQL (with the exception of one) are beyond the scope of this forum.
The exception is "Is there a JDBC driver for MySQL and how do I use it". The answer to that question is yes and see this http://www.mysql.com/products/connector/j/ -
Hi,
I use Java 1.3.1, jce 1.2.2 and eclipse.
To include the packet added it with �Project/Properties/ Add External JARs� but when I compile the program I get the following errors:
compile:
[javac] Compiling 10 source files to D:\MyTemp\ZFProjectView\build\temp\projectviewer
[javac] D:\MyTemp\ZFProjectView\src\projectviewer\DesEncrypter.java:3: package javax.crypto does not exist
[javac] import javax.crypto.*;
[javac] ^
[javac] D:\MyTemp\ZFProjectView\src\projectviewer\DesEncrypter.java:5: package javax.crypto.spec does not exist
[javac] import javax.crypto.spec.*;
[javac] ^
[javac] D:\MyTemp\ZFProjectView\src\projectviewer\DesEncrypter.java:15: cannot resolve symbol
[javac] symbol : class Cipher
[javac] location: class projectviewer.DesEncrypter
[javac] Cipher ecipher;
[javac] ^
Is it necessary to expand the classpath in the build.xml file or something like this?
ThanksI know its too late to answer your query... but just thought if not you there might be other people who may search solution for the same error.
Java 1.3 does not contains these packages... these are included in java 1.4 on wards.
If you want to do some encryption / decryption with java 1.3 i can provide you a link that might be of some help.
http://www.builderau.com.au/program/java/soa/Install-and-utilise-JCE/0,339024620,320264469,00.htm?feed=pt_library
<Happy Coding>
Cheers,
Jags
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