How to Set in the Midst

How can I set in the midst?

Without any evidence otherwise, I'd guess you've overriden the paint method of something like a JFrame and are painting directly to it.

The problem is, frames have decoration (a border and title bar for example), which takes up space inside the frame...

Technically, this is correct. The rectangle is painted in the center of frame, but the because of the frame's decorations, it looks like it's slightly high...

Instead, you should be painting onto the frame's content area instead.

Here the rectangle now looks correctly centered. In my tests, I set the first frame (bad) to 800x400, I made the second frame's content pane's preferred size 800x400, which made the frame size actually 816x438, as the frame's decorations are now outside of the paint area.

public class CenterOfFrame {

    public static void main(String[] args) {
        new CenterOfFrame();
    }

    public CenterOfFrame() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                new BadFrame().setVisible(true);

                JFrame goodFrame = new JFrame();
                goodFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                goodFrame.setContentPane(new PaintablePane());
                goodFrame.pack();
                goodFrame.setLocationRelativeTo(null);
                goodFrame.setVisible(true);

            }
        });
    }

    public class BadFrame extends JFrame {

        public BadFrame() {
            setSize(800, 400);
            setDefaultCloseOperation(EXIT_ON_CLOSE);
        }

        @Override
        public void paint(Graphics g) {
            super.paint(g);
            paintTest(g, getWidth() - 1, getHeight() - 1);
        }
    }

    public void paintTest(Graphics g, int width, int height) {
        g.setColor(Color.RED);
        g.drawLine(0, 0, width, height);
        g.drawLine(width, 0, 0, height);
        g.drawRect(50, 50, width - 100, height - 100);
    }

    public class PaintablePane extends JPanel {

        @Override
        public Dimension getPreferredSize() {
            return new Dimension(800, 400);
        }

        @Override
        protected void paintComponent(Graphics g) {
            super.paintComponent(g); //To change body of generated methods, choose Tools | Templates.
            paintTest(g, getWidth() - 1, getHeight() - 1);
        }
    }
}

This is, one of many reasons, why you should not override the paint method of top level containers ;)

Using PHP in the midst of markup

you don't need to write <?php . . .?> you just need to call the variable. so instead of writing "mystring".<?php print $myvar;?>; you just need "mySting".$myvar;

How to set page content to the middle of screen?

I'm guessing you want to center the box both vertically and horizontally, regardless of browser window size. Since you have a fixed width and height for the box, this should work:

Markup:

<div></div>

CSS:

div {
    height: 200px;
    width: 400px;
    background: black;

    position: fixed;
    top: 50%;
    left: 50%;
    margin-top: -100px;
    margin-left: -200px;
}

The div should remain in the center of the screen even if you resize the browser. Just replace the margin-top and margin-left with half of the height and width of your table.

Edit: Credit goes to CSS-Tricks, where I got the original idea.

Change value of a param in the midst of a function

You need to invoke the switch each time to get a different color set. One way to do this is to put a function inside your function e.g.:

function Write-Custom
{
    param($Say,$ThenSay,$Level,$ExtraLevel)

    function GetColors([string]$level)
    {
        switch([array]$level)
        {
            none {'Black','White'}
            name {'Cyan','DarkBlue'}
            good {'White','DarkGreen'}
            note {'Gray','White'}
            info {'White','DarkGray'}  
            warn {'Yellow','Black'}
            fail {'Black','Red'}
            default { throw "Unrecognized level $level" }
        }
    }

    $c = GetColors($Level)
    Write-Host " $Say" -ForegroundColor $c[0] -BackgroundColor $c[1]

    $c = GetColors($ExtraLevel)
    Write-Host " $ThenSay " -ForegroundColor $c[0] -BackgroundColor $c[1]
}

JFrame repainting image blinking

Don't override paint of top level containers like JFrame there aren't double buffered, instead, use a JPanel and override its paintComponent method. JPanel is double buffered by default.

Then, add the panel to what ever container you want

Don't forget to call it's super method (super.paintComponent) before you do any custom painting.

Take a closer look at Painting in AWT and Swing and Performing Custom Painting for more details about how painting works in Swing

This is just one reason why you shouldn't (extend from JFrame and) override paint of top level containers, take a look at

• How can I set in the midst?
• Graphics rendering in title bar
• Java JFrame .setSize(x, y) not working?
• How to get the EXACT middle of a screen, even when re-sized

for some more

Why this is not centered JFrame?

Start by using "actual" values and not "magic" values

getWidth and getHeight will tell you what the "actual" size of the component is

@Override 
protected void paintComponent(Graphics g){
    super.paintComponent(g);
    Graphics2D g2 = (Graphics2D) g;
    g2.setRenderingHint(
            RenderingHints.KEY_ANTIALIASING,
            RenderingHints.VALUE_ANTIALIAS_ON);
    g.setColor(Color.BLACK);
    g2.setStroke(new BasicStroke(4,BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));
    g.drawArc(getWidth()/2 -arcWidth/2, getHeight()/2 - arcHeight/2, arcWidth, arcHeight, 0, 360);
}

As to why you're having issues, see:

• How can I set in the midst?
• How to get the EXACT middle of a screen, even when re-sized

Window Size is smaller than it should be

This happens because the content needs to squeezed into the size of the frame minus its borders.

Checkout this question and this question for a more detailed explanation

The layout manager is also overriding the size property you set on the Screen component. In either case, you should be overriding the getPreferredSize method of the Screen class

Also, you shouldn't be relying on magic numbers or assumptions about the actual size of the component, but should, instead, be using getWidth and getHeight instead (I know, it's just for demonstration purposes)

createElement - select boxes interspersed in the midst of text

There is also a function called createTextNode() (MDN docu) for creating simple text as content. So one solution would be to split your text accordingly, transform it to textnodes and then append it as well:

var doc = document,
    fr = doc.createDocumentFragment(),
    td = doc.createElement("td"),
    sel1 = doc.createElement("select"),
    sel2 = doc.createElement("select"),
    text1 = doc.createTextNode( 'Tiana is ' ),
    text2 = doc.createTextNode( ' keen to go to the ' ),
    text3 = doc.createTextNode(  'market' );

sel1.name = "U4";
sel2.name = "J4";  

fr.appendChild(td);
td.appendChild( text1 );
td.appendChild(sel1); 
td.appendChild( text2 );
td.appendChild(sel2);
td.appendChild( text3 );

Here you can find an example fiddle: link.

Java 'Background' opens to small to see anything

Edit:

A better way to achieve the same result is to call b.setPreferredSize(dimension); and then pack() your frame.

See this answer for more information about JFrame.pack() :
https://stackoverflow.com/a/22982334/5224040

Try this in your main method:

public static void main(String[] args) {
    Background b = new Background();
    Dimension d = new Dimension(900, 885); //Create a new Dimension
    b.setTitle("Game");
    b.setPreferredSize(d);  //Set the PreferredSize;
    b.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    b.pack();  //Pack the frame
    b.setVisible(true);  //Setting Visible
}

You can also use the following methods to reposition your frame as necessary:

b.setLocationRelativeTo(null); //center the location on the screen.

b.setLocation(0, 0); //Set location explicitly

Call either of these methods below b.pack(); to reposition your frame.

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