Example usage for java.util Arrays sort

Introduction

In this page you can find the example usage for java.util Arrays sort.

Prototype

public static <T> void sort(T[] a, Comparator<? super T> c) 

Source Link

Document

Sorts the specified array of objects according to the order induced by the specified comparator.

Usage

From source file:ListActionsJPasswordField.java

public static void main(String args[]) {
    JTextComponent component = new JPasswordField();

    // Process action list
    Action actions[] = component.getActions();
    // Define comparator to sort actions
    Comparator<Action> comparator = new Comparator<Action>() {
        public int compare(Action a1, Action a2) {
            String firstName = (String) a1.getValue(Action.NAME);
            String secondName = (String) a2.getValue(Action.NAME);
            return firstName.compareTo(secondName);
        }//from   w  w  w  .  j  av  a  2 s. com
    };
    Arrays.sort(actions, comparator);

    int count = actions.length;
    System.out.println("Count: " + count);
    for (int i = 0; i < count; i++) {
        System.out.printf("%28s : %s\n", actions[i].getValue(Action.NAME), actions[i].getClass().getName());
    }
}

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From source file:ComparatorExampleForBuildInDataType.java

public static void main(String args[]) {
    ComparatorExampleForBuildInDataType example = new ComparatorExampleForBuildInDataType();
    example.createComparators();//  ww w  . ja v a  2 s.c o m

    Arrays.sort(boolParams, boolComp);

    example.printArray(boolParams);

    Arrays.sort(stringParams);

    example.printArray(stringParams);

    Arrays.sort(stringParams, fixedComp);

    example.printArray(stringParams);
}

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From source file:DirList3.java

public static void main(final String[] args) {
    File path = new File(".");
    String[] list;//from  w ww . j a va  2s.  c  o m
    if (args.length == 0)
        list = path.list();
    else
        list = path.list(new FilenameFilter() {
            private Pattern pattern = Pattern.compile(args[0]);

            public boolean accept(File dir, String name) {
                return pattern.matcher(new File(name).getName()).matches();
            }
        });
    Arrays.sort(list, new AlphabeticComparator());
    for (int i = 0; i < list.length; i++)
        System.out.println(list[i]);
}

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From source file:DirList2.java

public static void main(String[] args) {
    File path = new File(".");
    String[] list;//ww  w. j  a va2 s . co m
    if (args.length == 0)
        list = path.list();
    else
        list = path.list(filter(args[0]));
    Arrays.sort(list, new AlphabeticComparator());
    for (int i = 0; i < list.length; i++)
        System.out.println(list[i]);
}

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From source file:Person.java

public static void main(String[] args) {
    Person[] authors = { new Person("A", "S"), new Person("J", "G"), new Person("T", "C"), new Person("C", "S"),
            new Person("P", "C"), new Person("B", "B") };
    System.out.println("Original order:");
    for (Person author : authors) {
        System.out.println(author);
    }/* w w w.  j  a v a 2s .  c  o  m*/
    Arrays.sort(authors, new ComparePersons());
    System.out.println("\nOrder after sorting using comparator:");
    for (Person author : authors) {
        System.out.println(author);
    }
    Arrays.sort(authors); // Sort using Comparable method
    System.out.println("\nOrder after sorting using Comparable method:");
    for (Person author : authors) {
        System.out.println(author);
    }
}

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From source file:com.github.rinde.gpem17.Train.java

public static void main(String[] args) {
    if (args.length == 0) {
        run("files/config/gpem17.params");
    } else {/*from  w w  w  . j  a  v a2s.c  o  m*/
        for (String file : args) {
            File f = new File(file);
            if (f.isDirectory()) {
                File[] paramFiles = f.listFiles(new FilenameFilter() {
                    @Override
                    public boolean accept(File dir, String name) {
                        return name.endsWith(".params");
                    }
                });

                Arrays.sort(paramFiles, new Comparator<File>() {
                    @Override
                    public int compare(File o1, File o2) {
                        return o1.getName().compareTo(o2.getName());
                    }
                });

                for (File paramFile : paramFiles) {
                    run(paramFile.getPath());
                }
            } else {
                run(file);
            }
        }
    }
}

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From source file:Person.java

public static void main(String[] args) {
    Person[] authors = { new Person("A", "S"), new Person("J", "G"), new Person("T", "C"), new Person("C", "S"),
            new Person("P", "C"), new Person("B", "B") };
    System.out.println("Original order:");
    for (Person author : authors) {
        System.out.println(author);
    }//  w  w  w .j  a v  a 2  s .  c o m
    Arrays.sort(authors, new ComparePersons()); // Sort using comparator
    System.out.println("\nOrder after sorting using comparator:");
    for (Person author : authors) {
        System.out.println(author);
    }
    Arrays.sort(authors); // Sort using Comparable method
    System.out.println("\nOrder after sorting using Comparable method:");
    for (Person author : authors) {
        System.out.println(author);
    }
}

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From source file:org.eclipse.swt.snippets.Snippet192.java

public static void main(String[] args) {
    // initialize data with keys and random values
    int size = 100;
    Random random = new Random();
    final int[][] data = new int[size][];
    for (int i = 0; i < data.length; i++) {
        data[i] = new int[] { i, random.nextInt() };
    }//from w  ww . j a v  a 2  s.c  o  m
    // create a virtual table to display data
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 192");
    shell.setLayout(new FillLayout());
    final Table table = new Table(shell, SWT.VIRTUAL);
    table.setHeaderVisible(true);
    table.setLinesVisible(true);
    table.setItemCount(size);
    final TableColumn column1 = new TableColumn(table, SWT.NONE);
    column1.setText("Key");
    column1.setWidth(200);
    final TableColumn column2 = new TableColumn(table, SWT.NONE);
    column2.setText("Value");
    column2.setWidth(200);
    table.addListener(SWT.SetData, e -> {
        TableItem item = (TableItem) e.item;
        int index = table.indexOf(item);
        int[] datum = data[index];
        item.setText(new String[] { Integer.toString(datum[0]), Integer.toString(datum[1]) });
    });
    // Add sort indicator and sort data when column selected
    Listener sortListener = e -> {
        // determine new sort column and direction
        TableColumn sortColumn = table.getSortColumn();
        TableColumn currentColumn = (TableColumn) e.widget;
        int dir = table.getSortDirection();
        if (sortColumn == currentColumn) {
            dir = dir == SWT.UP ? SWT.DOWN : SWT.UP;
        } else {
            table.setSortColumn(currentColumn);
            dir = SWT.UP;
        }
        // sort the data based on column and direction
        final int index = currentColumn == column1 ? 0 : 1;
        final int direction = dir;
        Arrays.sort(data, (a, b) -> {
            if (a[index] == b[index])
                return 0;
            if (direction == SWT.UP) {
                return a[index] < b[index] ? -1 : 1;
            }
            return a[index] < b[index] ? 1 : -1;
        });
        // update data displayed in table
        table.setSortDirection(dir);
        table.clearAll();
    };
    column1.addListener(SWT.Selection, sortListener);
    column2.addListener(SWT.Selection, sortListener);
    table.setSortColumn(column1);
    table.setSortDirection(SWT.UP);
    shell.setSize(shell.computeSize(SWT.DEFAULT, SWT.DEFAULT).x, 300);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:Person.java

public static void main(String[] args) {
    Person[] persons = new Person[4];
    persons[0] = new Person();
    persons[0].setFirstName("A");
    persons[0].setLastName("X");
    persons[0].setAge(56);/*from  ww  w.ja v  a  2  s.co  m*/

    persons[1] = new Person();
    persons[1].setFirstName("S");

    persons[1].setLastName("C");
    persons[1].setAge(8);

    persons[2] = new Person();
    persons[2].setFirstName("E");
    persons[2].setLastName("H");
    persons[2].setAge(16);

    persons[3] = new Person();
    persons[3].setFirstName("B");
    persons[3].setLastName("Q");
    persons[3].setAge(69);

    System.out.println("Natural Order");
    for (int i = 0; i < 4; i++) {
        Person person = persons[i];
        String lastName = person.getLastName();
        String firstName = person.getFirstName();
        int age = person.getAge();
        System.out.println(lastName + ", " + firstName + ". Age:" + age);
    }

    Arrays.sort(persons, new LastNameComparator());
    System.out.println();
    System.out.println("Sorted by last name");
    for (int i = 0; i < 4; i++) {
        Person person = persons[i];
        String lastName = person.getLastName();
        String firstName = person.getFirstName();
        int age = person.getAge();
        System.out.println(lastName + ", " + firstName + ". Age:" + age);
    }
    Arrays.sort(persons, new FirstNameComparator());
    System.out.println();
    System.out.println("Sorted by first name");
    for (int i = 0; i < 4; i++) {
        Person person = persons[i];
        String lastName = person.getLastName();
        String firstName = person.getFirstName();
        int age = person.getAge();
        System.out.println(lastName + ", " + firstName + ". Age:" + age);
    }

    Arrays.sort(persons);
    System.out.println();
    System.out.println("Sorted by age");
    for (int i = 0; i < 4; i++) {
        Person person = persons[i];
        String lastName = person.getLastName();
        String firstName = person.getFirstName();
        int age = person.getAge();
        System.out.println(lastName + ", " + firstName + ". Age:" + age);
    }
}

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From source file:TableSortTwoDirection.java

public static void main(String[] args) {
    // initialize data with keys and random values
    int size = 100;
    Random random = new Random();
    final int[][] data = new int[size][];
    for (int i = 0; i < data.length; i++) {
        data[i] = new int[] { i, random.nextInt() };
    }//from   w  w  w . ja va  2  s.  c o  m
    // create a virtual table to display data
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    final Table table = new Table(shell, SWT.VIRTUAL);
    table.setHeaderVisible(true);
    table.setLinesVisible(true);
    table.setItemCount(size);
    final TableColumn column1 = new TableColumn(table, SWT.NONE);
    column1.setText("Key");
    column1.setWidth(200);
    final TableColumn column2 = new TableColumn(table, SWT.NONE);
    column2.setText("Value");
    column2.setWidth(200);
    table.addListener(SWT.SetData, new Listener() {
        public void handleEvent(Event e) {
            TableItem item = (TableItem) e.item;
            int index = table.indexOf(item);
            int[] datum = data[index];
            item.setText(new String[] { Integer.toString(datum[0]), Integer.toString(datum[1]) });
        }
    });
    // Add sort indicator and sort data when column selected
    Listener sortListener = new Listener() {
        public void handleEvent(Event e) {
            // determine new sort column and direction
            TableColumn sortColumn = table.getSortColumn();
            TableColumn currentColumn = (TableColumn) e.widget;
            int dir = table.getSortDirection();
            if (sortColumn == currentColumn) {
                dir = dir == SWT.UP ? SWT.DOWN : SWT.UP;
            } else {
                table.setSortColumn(currentColumn);
                dir = SWT.UP;
            }
            // sort the data based on column and direction
            final int index = currentColumn == column1 ? 0 : 1;
            final int direction = dir;
            Arrays.sort(data, new Comparator() {
                public int compare(Object arg0, Object arg1) {
                    int[] a = (int[]) arg0;
                    int[] b = (int[]) arg1;
                    if (a[index] == b[index])
                        return 0;
                    if (direction == SWT.UP) {
                        return a[index] < b[index] ? -1 : 1;
                    }
                    return a[index] < b[index] ? 1 : -1;
                }
            });
            // update data displayed in table
            table.setSortDirection(dir);
            table.clearAll();
        }
    };
    column1.addListener(SWT.Selection, sortListener);
    column2.addListener(SWT.Selection, sortListener);
    table.setSortColumn(column1);
    table.setSortDirection(SWT.UP);
    shell.setSize(shell.computeSize(SWT.DEFAULT, SWT.DEFAULT).x, 300);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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