Example usage for java.util Calendar getActualMaximum

Introduction

In this page you can find the example usage for java.util Calendar getActualMaximum.

Prototype

public int getActualMaximum(int field)

Source Link

Document

Returns the maximum value that the specified calendar field could have, given the time value of this Calendar.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Calendar cal = Calendar.getInstance();
    int days = cal.getActualMaximum(Calendar.DAY_OF_MONTH); // 28
}

From source file:Main.java

public static void main(String[] args) {
    Calendar calendar = Calendar.getInstance();

    int lastDate = calendar.getActualMaximum(Calendar.DATE);

    System.out.println("Date     : " + calendar.getTime());
    System.out.println("Last Date: " + lastDate);
}

From source file:Main.java

public static void main(String[] args) {
    Calendar calendar = Calendar.getInstance();
    int lastDate = calendar.getActualMaximum(Calendar.DATE);

    calendar.set(Calendar.DATE, lastDate);
    int lastDay = calendar.get(Calendar.DAY_OF_WEEK);

    System.out.println("Last Date: " + calendar.getTime());

    System.out.println("Last Day : " + lastDay);
}

From source file:Main.java

public static void main(String[] argv) throws Exception {

    Calendar cal = new GregorianCalendar(2000, Calendar.FEBRUARY, 1);
    int days = cal.getActualMaximum(Calendar.DAY_OF_MONTH); // 29
}

From source file:Main.java

public static void main(String[] args) {

    Calendar cal = Calendar.getInstance();

    // get the maximum value that year field can have
    int i = cal.getActualMaximum(Calendar.YEAR);
    System.out.println("Maximum year:" + i);

    // get the maximum value that month field can have
    int a = cal.getActualMaximum(Calendar.MONTH);
    System.out.println("Maximum month:" + a);
}

From source file:Main.java

public static void main(String[] args) {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(new Date());

    calendar.set(Calendar.DAY_OF_MONTH, 1);
    // day of week for first date of month
    int weekOfFirstDate = calendar.get(Calendar.WEEK_OF_YEAR);

    int lastDateOfMonth = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
    calendar.set(Calendar.DAY_OF_MONTH, lastDateOfMonth);
    // day of week for last date of month

    int weekOfLastDate = calendar.get(Calendar.WEEK_OF_YEAR);

    calendar.roll(Calendar.MONTH, false);
    int lastDateOfPrevMonth = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);

    int weeksToDisplay = weekOfLastDate - weekOfFirstDate + 1;
    int[] days = new int[weeksToDisplay * 7];

    int firstDayPosition = 3;

    // fill previous month
    int x = lastDateOfPrevMonth;
    for (int i = firstDayPosition - 1; i >= 0; i--) {
        days[i] = x--;//from w  ww  .jav a  2s  . c o  m
    }

    // fill current month
    for (int i = 1; i < lastDateOfMonth + 1; i++) {
        days[firstDayPosition - 1 + i] = i;
    }

    // fill next month
    int j = 1;
    for (int i = lastDateOfMonth + firstDayPosition; i < days.length; i++) {
        days[i] = j++;
    }

    for (int i = 0; i < days.length; i++) {
        if (i % 7 == 0) {
            System.out.println();
        }
        System.out.print(days[i] + "\t");
    }
}

From source file:TextVerifyInputFormatDate.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new GridLayout());
    final Text text = new Text(shell, SWT.BORDER);
    text.setText("YYYY/MM/DD");
    ;//  ww  w .  j  a  v a  2 s .c o m
    final Calendar calendar = Calendar.getInstance();
    text.addListener(SWT.Verify, new Listener() {
        boolean ignore;

        public void handleEvent(Event e) {
            if (ignore)
                return;
            e.doit = false;
            StringBuffer buffer = new StringBuffer(e.text);
            char[] chars = new char[buffer.length()];
            buffer.getChars(0, chars.length, chars, 0);
            if (e.character == '\b') {
                for (int i = e.start; i < e.end; i++) {
                    switch (i) {
                    case 0: /* [Y]YYY */
                    case 1: /* Y[Y]YY */
                    case 2: /* YY[Y]Y */
                    case 3: /* YYY[Y] */ {
                        buffer.append('Y');
                        break;
                    }
                    case 5: /* [M]M */
                    case 6: /* M[M] */ {
                        buffer.append('M');
                        break;
                    }
                    case 8: /* [D]D */
                    case 9: /* D[D] */ {
                        buffer.append('D');
                        break;
                    }
                    case 4: /* YYYY[/]MM */
                    case 7: /* MM[/]DD */ {
                        buffer.append('/');
                        break;
                    }
                    default:
                        return;
                    }
                }
                text.setSelection(e.start, e.start + buffer.length());
                ignore = true;
                text.insert(buffer.toString());
                ignore = false;
                text.setSelection(e.start, e.start);
                return;
            }

            int start = e.start;
            if (start > 9)
                return;
            int index = 0;
            for (int i = 0; i < chars.length; i++) {
                if (start + index == 4 || start + index == 7) {
                    if (chars[i] == '/') {
                        index++;
                        continue;
                    }
                    buffer.insert(index++, '/');
                }
                if (chars[i] < '0' || '9' < chars[i])
                    return;
                if (start + index == 5 && '1' < chars[i])
                    return; /* [M]M */
                if (start + index == 8 && '3' < chars[i])
                    return; /* [D]D */
                index++;
            }
            String newText = buffer.toString();
            int length = newText.length();
            StringBuffer date = new StringBuffer(text.getText());
            date.replace(e.start, e.start + length, newText);
            calendar.set(Calendar.YEAR, 1901);
            calendar.set(Calendar.MONTH, Calendar.JANUARY);
            calendar.set(Calendar.DATE, 1);
            String yyyy = date.substring(0, 4);
            if (yyyy.indexOf('Y') == -1) {
                int year = Integer.parseInt(yyyy);
                calendar.set(Calendar.YEAR, year);
            }
            String mm = date.substring(5, 7);
            if (mm.indexOf('M') == -1) {
                int month = Integer.parseInt(mm) - 1;
                int maxMonth = calendar.getActualMaximum(Calendar.MONTH);
                if (0 > month || month > maxMonth)
                    return;
                calendar.set(Calendar.MONTH, month);
            }
            String dd = date.substring(8, 10);
            if (dd.indexOf('D') == -1) {
                int day = Integer.parseInt(dd);
                int maxDay = calendar.getActualMaximum(Calendar.DATE);
                if (1 > day || day > maxDay)
                    return;
                calendar.set(Calendar.DATE, day);
            } else {
                if (calendar.get(Calendar.MONTH) == Calendar.FEBRUARY) {
                    char firstChar = date.charAt(8);
                    if (firstChar != 'D' && '2' < firstChar)
                        return;
                }
            }
            text.setSelection(e.start, e.start + length);
            ignore = true;
            text.insert(newText);
            ignore = false;
        }
    });
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

From source file:org.eclipse.swt.snippets.Snippet179.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 179");
    shell.setLayout(new GridLayout());
    final Text text = new Text(shell, SWT.BORDER);
    text.setText("YYYY/MM/DD");
    final Calendar calendar = Calendar.getInstance();
    text.addListener(SWT.Verify, new Listener() {
        boolean ignore;

        @Override/*from w  ww.j a v  a2 s .  c  o  m*/
        public void handleEvent(Event e) {
            if (ignore)
                return;
            e.doit = false;
            StringBuilder buffer = new StringBuilder(e.text);
            char[] chars = new char[buffer.length()];
            buffer.getChars(0, chars.length, chars, 0);
            if (e.character == '\b') {
                for (int i = e.start; i < e.end; i++) {
                    switch (i) {
                    case 0: /* [Y]YYY */
                    case 1: /* Y[Y]YY */
                    case 2: /* YY[Y]Y */
                    case 3: /* YYY[Y] */ {
                        buffer.append('Y');
                        break;
                    }
                    case 5: /* [M]M*/
                    case 6: /* M[M] */ {
                        buffer.append('M');
                        break;
                    }
                    case 8: /* [D]D */
                    case 9: /* D[D] */ {
                        buffer.append('D');
                        break;
                    }
                    case 4: /* YYYY[/]MM */
                    case 7: /* MM[/]DD */ {
                        buffer.append('/');
                        break;
                    }
                    default:
                        return;
                    }
                }
                text.setSelection(e.start, e.start + buffer.length());
                ignore = true;
                text.insert(buffer.toString());
                ignore = false;
                text.setSelection(e.start, e.start);
                return;
            }

            int start = e.start;
            if (start > 9)
                return;
            int index = 0;
            for (int i = 0; i < chars.length; i++) {
                if (start + index == 4 || start + index == 7) {
                    if (chars[i] == '/') {
                        index++;
                        continue;
                    }
                    buffer.insert(index++, '/');
                }
                if (chars[i] < '0' || '9' < chars[i])
                    return;
                if (start + index == 5 && '1' < chars[i])
                    return; /* [M]M */
                if (start + index == 8 && '3' < chars[i])
                    return; /* [D]D */
                index++;
            }
            String newText = buffer.toString();
            int length = newText.length();
            StringBuilder date = new StringBuilder(text.getText());
            date.replace(e.start, e.start + length, newText);
            calendar.set(Calendar.YEAR, 1901);
            calendar.set(Calendar.MONTH, Calendar.JANUARY);
            calendar.set(Calendar.DATE, 1);
            String yyyy = date.substring(0, 4);
            if (yyyy.indexOf('Y') == -1) {
                int year = Integer.parseInt(yyyy);
                calendar.set(Calendar.YEAR, year);
            }
            String mm = date.substring(5, 7);
            if (mm.indexOf('M') == -1) {
                int month = Integer.parseInt(mm) - 1;
                int maxMonth = calendar.getActualMaximum(Calendar.MONTH);
                if (0 > month || month > maxMonth)
                    return;
                calendar.set(Calendar.MONTH, month);
            }
            String dd = date.substring(8, 10);
            if (dd.indexOf('D') == -1) {
                int day = Integer.parseInt(dd);
                int maxDay = calendar.getActualMaximum(Calendar.DATE);
                if (1 > day || day > maxDay)
                    return;
                calendar.set(Calendar.DATE, day);
            } else {
                if (calendar.get(Calendar.MONTH) == Calendar.FEBRUARY) {
                    char firstChar = date.charAt(8);
                    if (firstChar != 'D' && '2' < firstChar)
                        return;
                }
            }
            text.setSelection(e.start, e.start + length);
            ignore = true;
            text.insert(newText);
            ignore = false;
        }
    });
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

From source file:Main.java

public static int numDayOfMonth(Calendar calendar) {
    return calendar.getActualMaximum(Calendar.MONTH);
}

From source file:Main.java

public static int getDaysByYearMonth(Calendar calendar) {
    return calendar.getActualMaximum(Calendar.DATE);
}