📄 layouttest.java
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import java.awt.*;import com.jhlabs.awt.*;import javax.swing.*;public class LayoutTest { public static void main(String[] args) { paragraphLayout(); packerLayout(); gridLayoutPlus(); basicGridLayout(); clockLayout(); } public static void paragraphLayout() { JFrame jf = new JFrame("ParagraphLayout"); Container f = jf.getContentPane(); f.setLayout(new ParagraphLayout()); JButton b1 = new JButton("One"); JButton b2 = new JButton("Two"); JButton b3 = new JButton("Three"); JButton b4 = new JButton("Four"); JButton b5 = new JButton("Five"); JButton b6 = new JButton("Six"); JButton b7 = new JButton("Seven"); JButton b8 = new JButton("Eight"); JTextField t1 = new JTextField(4); JTextField t2 = new JTextField(20); JTextArea t3 = new JTextArea(5, 30); b2.setFont(new Font("serif", Font.PLAIN, 24)); f.add(new JLabel("Some buttons:"), ParagraphLayout.NEW_PARAGRAPH); f.add(b1); f.add(new JLabel("A long label:"), ParagraphLayout.NEW_PARAGRAPH); f.add(b2); f.add(b3); f.add(new JLabel("Short label:"), ParagraphLayout.NEW_PARAGRAPH); f.add(b4); f.add(b5, ParagraphLayout.NEW_LINE); f.add(b6); f.add(b7); f.add(b8, ParagraphLayout.NEW_LINE); f.add(new JLabel("Text:"), ParagraphLayout.NEW_PARAGRAPH); f.add(t1); f.add(new JLabel("More text:"), ParagraphLayout.NEW_PARAGRAPH); f.add(t2); f.add(new JLabel("miles")); f.add(new JLabel("A text area:"), ParagraphLayout.NEW_PARAGRAPH_TOP); f.add(t3); jf.pack(); jf.show(); } public static void packerLayout() { JFrame jf = new JFrame("PackerLayout"); Container f = jf.getContentPane(); f.setLayout(new PackerLayout()); JButton b1 = new JButton("One"); JButton b2 = new JButton("Two"); JButton b3 = new JButton("Three"); JButton b4 = new JButton("Four"); JButton b5 = new JButton("Five"); JButton b6 = new JButton("Six"); b2.setFont(new Font("serif", Font.PLAIN, 24)); f.add(b1); f.add(b2, PackerLayout.LEFT_CENTER); f.add(b3, PackerLayout.BOTTOM_CENTER_FILL); f.add(b4, PackerLayout.TOP_CENTER_FILL); f.add(b5, PackerLayout.TOP_LEFT); f.add(b6, PackerLayout.RIGHT_CENTER); jf.pack(); jf.show(); } public static void gridLayoutPlus() { JFrame jf = new JFrame("GridLayoutPlus"); Container f = jf.getContentPane(); GridLayoutPlus glp = new GridLayoutPlus(0, 3, 10, 10); glp.setColWeight(1, 2); glp.setColWeight(2, 1); glp.setRowWeight(2, 1); f.setLayout(glp); for (int r = 0; r < 6; r++) { for (int c = 0; c < 3; c++) { f.add(new JButton(r+","+c)); } } jf.pack(); jf.show(); } public static void basicGridLayout() { JFrame jf = new JFrame("BasicGridLayout"); Container f = jf.getContentPane(); BasicGridLayout l = new BasicGridLayout(0, 3, 10, 10); l.setColWeight(1); l.setRowWeight(1); l.setIncludeInvisible(false); f.setLayout(l); for (int r = 0; r < 6; r++) { for (int c = 0; c < 3; c++) { JButton b; f.add(b = new JButton(r+","+c)); b.setVisible((r+c)%4 != 0); } } jf.pack(); jf.show(); } public static void clockLayout() { JFrame jf = new JFrame("ClockLayout"); Container f = jf.getContentPane(); f.setLayout(new ClockLayout()); for (int r = 0; r < 12; r++) { f.add(new JButton(r+"")); } jf.pack(); jf.show(); }}
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