Charles Bell
Posts: 519
Nickname: charles
Registered: Feb, 2002
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Re: Formating in Java
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Posted: Jun 19, 2002 10:03 PM
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import java.text.*;
import java.util.*;
public class FormatStuff{
public FormatStuff(){
doStuff();
}
public static void main(String[] args){
new FormatStuff();
}
public void doStuff(){
//format I get from database is 2002-06-20, and I want to show it as 20th June 2002
System.out.println(formatDateString("2002-06-01"));
System.out.println(formatDateString("2002-6-1"));
System.out.println(formatDateString("2002-06-02"));
System.out.println(formatDateString("2002-6-2"));
System.out.println(formatDateString("2002-06-03"));
System.out.println(formatDateString("2002-6-3"));
System.out.println(formatDateString("2002-03-14"));
System.out.println(formatDateString("2002-05-30"));
//format a decimal number. Such as a number like 25000.6425.
//I would like it be format to 25,000.6425.
System.out.println(formatDecimal(25000.6425));
System.out.println(formatDecimal(233354550.89996425));
System.out.println(formatDecimal(222455000.6425));
System.out.println(formatDecimal(1234.65));
System.out.println(formatDecimal(2544000.6425));
System.out.println(formatDecimal(25899999000.6465767367868325));
}
public String formatNumber(double d){
return NumberFormat.getInstance().format(d);
}
public String formatDecimal(double d){
double integerPart = Math.floor(d);
double fractionPart = d - integerPart;
//System.out.println("double: " + d);
//System.out.println("integerPart: " + integerPart);
//System.out.println("fractionPart: " + fractionPart);
DecimalFormat formatter = new DecimalFormat();
formatter.setGroupingSize(3);
StringBuffer buffer = new StringBuffer();
buffer = formatter.format(integerPart,buffer,new FieldPosition(NumberFormat.Field.DECIMAL_SEPARATOR));
return buffer.toString() + String.valueOf(fractionPart);
}
/** Assumes string input is like 2002-06-20.
*/
public String formatDateString(String dateString) {
String[] months = {"January", "February", "March", "April",
"May", "June", "July", "August",
"September", "October", "November", "December"};
String suffix = "th";
String[] parts = dateString.split("-");
if (parts[2].compareTo("1") == 0){
suffix = "st";
}else if (parts[2].compareTo("01") == 0){
suffix = "st";
parts[2] = "1";
}else if (parts[2].compareTo("2") == 0){
suffix = "nd";
}else if (parts[2].compareTo("02") == 0){
suffix = "nd";
parts[2] = "2";
}else if (parts[2].compareTo("3") == 0){
suffix = "rd";
}else if (parts[2].compareTo("03") == 0){
suffix = "rd";
parts[2] = "3";
}else if (parts[2].compareTo("04") == 0){
parts[2] = "4";
}else if (parts[2].compareTo("05") == 0){
parts[2] = "5";
}else if (parts[2].compareTo("06") == 0){
parts[2] = "6";
}else if (parts[2].compareTo("07") == 0){
parts[2] = "7";
}else if (parts[2].compareTo("08") == 0){
parts[2] = "8";
}else if (parts[2].compareTo("09") == 0){
parts[2] = "9";
}
return parts[2] + suffix + " " + months[toInt(parts[1]) - 1] + " " + parts[0];
}
private int toInt(String s){
int n = -1;
try{
n = Integer.parseInt(s);
}catch(NumberFormatException nfe){
System.err.println("NumberFormatException: " + nfe.getMessage());
}
return n;
}
}
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