Desktop.getDesktop().open(new File("C:\\folder"));Note: java.awt.Desktop got introduced in JDK 6. is not supported in JDK 5
Runtime.getRuntime().exec("explorer C:\bin");FileSystemView.getFileSystemView().getHomeDirectory()
'java'에 해당되는 글 6건
- 2018.09.05 java open explorer examples
- 2018.01.20 java CallableStatement
- 2008.08.13 Java BigDecimal Example 1
- 2008.08.07 java 작업기간 구하기에서 주말 여부 판단하기
- 2007.12.18 xstream ] Serializing an object to XML
- 2007.12.17 javascript -> StringBuffer
private int executeCallableStatement(final String aSql, final Integer fetchSize, QueryListener queryListener) throws SQLException {
if(isNotConnected()){
try{
queryListener.onError("DB연결을 먼저하세요!!");
}
finally{
queryListener.onFinished();
}
return 0;
}
final String sql = trimSqlErrorString(aSql);
int rownums=0;
ResultSet rset = null;
CallableStatement stmt = null;//ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
try{
stmt = connMgr.prepareCall(sql);
stmt.execute();
queryListener.onEachQueryExecuting(stmt);
if(stmt.getMoreResults()){
rset = stmt.getResultSet();
rownums = queryListener.onEachResultSet(sql, rset, fetchSize);
}
else {
rownums = stmt.getUpdateCount();
queryListener.onUpdatedCount(rownums, sql);
}
}
finally{
connMgr.close(rset, stmt);
queryListener.onEachQueryClosed();
}
return rownums;
}
private String trimSqlErrorString(String aSql) {
//.replaceAll("--[^\n]+\n", "").replaceAll("/\\*[^/]+\\*/", "").replaceAll("\\?","'1'").trim();
return MyStringUtil.trim(aSql).replaceAll("/\\*\\s+", "/*");
}
BigDecimal Test
public void testBigDecimalRound() throws Exception {
printBigDecimalRound("7.42",2);
printBigDecimalRound("127.42",2);
printBigDecimalRound("127",2);
printBigDecimalRound("-127",2);
printBigDecimalRound("-127.123",2);
}
private void printBigDecimalRound(String s, int p) {
int prec=s.indexOf(".");
prec=prec<0?s.length():prec;
System.out.println("s>" + s );
System.out.println("d>" + Double.parseDouble(s) );
System.out.println("d>" + new BigDecimal(Double.parseDouble(s)) );
System.out.println("r>"+ new BigDecimal(Double.parseDouble(s)).round(
new MathContext(prec+p, RoundingMode.CEILING)) );
System.out.println("x>" + new BigDecimal(s));
}
results:
s>7.42
d>7.42
d>7.4199999999999999289457264239899814128875732421875
r>7.42
x>7.42
s>127.42
d>127.42
d>127.4200000000000017053025658242404460906982421875
r>127.43
x>127.42
s>127
d>127.0
d>127
r>127
x>127
s>-127
d>-127.0
d>-127
r>-127
x>-127
s>-127.123
d>-127.123
d>-127.1230000000000046611603465862572193145751953125
r>-127.123
x>-127.123
public void testBigDecimalRound() throws Exception {
printBigDecimalRound("7.42",2);
printBigDecimalRound("127.42",2);
printBigDecimalRound("127",2);
printBigDecimalRound("-127",2);
printBigDecimalRound("-127.123",2);
}
private void printBigDecimalRound(String s, int p) {
int prec=s.indexOf(".");
prec=prec<0?s.length():prec;
System.out.println("s>" + s );
System.out.println("d>" + Double.parseDouble(s) );
System.out.println("d>" + new BigDecimal(Double.parseDouble(s)) );
System.out.println("r>"+ new BigDecimal(Double.parseDouble(s)).round(
new MathContext(prec+p, RoundingMode.CEILING)) );
System.out.println("x>" + new BigDecimal(s));
}
results:
s>7.42
d>7.42
d>7.4199999999999999289457264239899814128875732421875
r>7.42
x>7.42
s>127.42
d>127.42
d>127.4200000000000017053025658242404460906982421875
r>127.43
x>127.42
s>127
d>127.0
d>127
r>127
x>127
s>-127
d>-127.0
d>-127
r>-127
x>-127
s>-127.123
d>-127.123
d>-127.1230000000000046611603465862572193145751953125
r>-127.123
x>-127.123
/**
* 지정일부터 작업전날까지.
* <pre>작업 전날 구하기.
* 1.그달 마지막일이 일요일이면 3일전까지
* 2.그달 마지막일이 토요일이면 2일전까지
* 3.그달 마지막일이 평일이면 1일전까지.
* </pre>
* @param currnetDate
* @return
*/
private boolean isWorkingDate(String currnetDate, int beginDay ) {
String currentDate = currnetDate.replaceAll("-","");
int year = Integer.parseInt(currentDate.substring(0,4));
int month = Integer.parseInt(currentDate.substring(4,6));
int day = Integer.parseInt(currentDate.substring(6,8));
int endDay;
Calendar cal = Calendar.getInstance();
cal.set(year, month-1, day );
int lastDayOfMonth = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
cal.set(Calendar.DAY_OF_MONTH, lastDayOfMonth );
int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
if( dayOfWeek == Calendar.SATURDAY ){
endDay=lastDayOfMonth-2;
}
else if( dayOfWeek == Calendar.SUNDAY ){
endDay=lastDayOfMonth-3;
}
else {
endDay=lastDayOfMonth-1;
}
return day >= beginDay && day <= endDay;
}
* 지정일부터 작업전날까지.
* <pre>작업 전날 구하기.
* 1.그달 마지막일이 일요일이면 3일전까지
* 2.그달 마지막일이 토요일이면 2일전까지
* 3.그달 마지막일이 평일이면 1일전까지.
* </pre>
* @param currnetDate
* @return
*/
private boolean isWorkingDate(String currnetDate, int beginDay ) {
String currentDate = currnetDate.replaceAll("-","");
int year = Integer.parseInt(currentDate.substring(0,4));
int month = Integer.parseInt(currentDate.substring(4,6));
int day = Integer.parseInt(currentDate.substring(6,8));
int endDay;
Calendar cal = Calendar.getInstance();
cal.set(year, month-1, day );
int lastDayOfMonth = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
cal.set(Calendar.DAY_OF_MONTH, lastDayOfMonth );
int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
if( dayOfWeek == Calendar.SATURDAY ){
endDay=lastDayOfMonth-2;
}
else if( dayOfWeek == Calendar.SUNDAY ){
endDay=lastDayOfMonth-3;
}
else {
endDay=lastDayOfMonth-1;
}
return day >= beginDay && day <= endDay;
}
http://xstream.codehaus.org/tutorial.html
엔터티 클래스의 인스턴스된 객체를
XStream을 통해서 XML 문자열로 만든다.
XStream xstream = new XStream(); // require XPP3 library
// = new XStream ( new DomDriver()); // does not require XPP3 library.
xstream.alias( "person", Person.class );
Person p = new Person("Joe","Walnes");
어쩌구
String xml = xstream.toXML( joe );
란다.
놀랍다.
엔터티 클래스의 인스턴스된 객체를
XStream을 통해서 XML 문자열로 만든다.
XStream xstream = new XStream(); // require XPP3 library
// = new XStream ( new DomDriver()); // does not require XPP3 library.
xstream.alias( "person", Person.class );
Person p = new Person("Joe","Walnes");
어쩌구
String xml = xstream.toXML( joe );
란다.
놀랍다.
JavaScript StringBuffer
function StringBuffer() { this.buffer = []; }To use it:StringBuffer.prototype.append = function(string)
{
this.buffer.push(string);
return this;
}StringBuffer.prototype.toString = function()
{
return this.buffer.join("");
}
var s = new StringBuffer();link:
s.append("Hello, ").append(" World!");
alert(s.toString());
