の Java BoxLayout クラス コンポーネントを垂直または水平に配置するために使用されます。この目的のために、BoxLayout クラスは 4 つの定数を提供します。それらは次のとおりです。
DSにスタックする
注: BoxLayout クラスは javax.swing パッケージにあります。
BoxLayoutクラスのフィールド
BoxLayout クラスのコンストラクター
Y-AXIS を使用した BoxLayout クラスの例:
ファイル名： BoxLayoutExample1.java
import java.awt.*; import javax.swing.*; public class BoxLayoutExample1 extends Frame { Button buttons[]; public BoxLayoutExample1 () { buttons = new Button [5]; for (int i = 0;i<5;i++) { buttons[i]="new" button ('button ' + (i 1)); adding the buttons so that it can be displayed add (buttons[i]); } will placed horizontally setlayout (new boxlayout (this, boxlayout.y_axis)); setsize(400,400); setvisible(true); main method public static void main(string args[]){ boxlayoutexample1 b="new" boxlayoutexample1(); < pre> download this example <p> <strong>Output:</strong> </p> <img src="//techcodeview.com/img/layout-manager/08/java-boxlayout.webp" alt="BoxLayout class example"> <h3>Example of BoxLayout class with X-AXIS</h3> <p> <strong>FileName:</strong> BoxLayoutExample2.java</p> <pre> import java.awt.*; import javax.swing.*; public class BoxLayoutExample2 extends Frame { Button buttons[]; public BoxLayoutExample2() { buttons = new Button [5]; for (int i = 0;i<5;i++) { buttons[i]="new" button ('button ' + (i 1)); adding the buttons so that it can be displayed add (buttons[i]); } in output will aligned vertically setlayout (new boxlayout(this, boxlayout.x_axis)); setsize(400,400); setvisible(true); main method public static void main(string args[]){ boxlayoutexample2 b="new" boxlayoutexample2(); < pre> download this example <p> <strong>Output:</strong> </p> <img src="//techcodeview.com/img/layout-manager/08/java-boxlayout-2.webp" alt="BoxLayout class example"> <h3>Example of BoxLayout Class with LINE_AXIS</h3> <p>The following example shows the effect of setting the value of ComponentOrientation property of the container to RIGHT_TO_LEFT. If we do not set the value of ComponentOrientation property, then the components would be laid out from left to right. Comment line 11, and see it yourself.</p> <p> <strong>FileName:</strong> BoxLayoutExample3.java</p> <pre> // import statements import java.awt.*; import javax.swing.*; public class BoxLayoutExample3 extends Frame { Button buttons[]; // constructor of the class public BoxLayoutExample3() { buttons = new Button[5]; setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT); // line 11 for (int i = 0; i <5; i++) { buttons[i]="new" button ('button ' + (i 1)); adding the buttons so that it can be displayed add (buttons[i]); } componentorientation is set to right_to_left. therefore, added will rendered from right left setlayout (new boxlayout(this, boxlayout.line_axis)); setsize(400, 400); setvisible(true); main method public static void main(string argvs[]) creating an object of class boxlayoutexample3 obj="new" boxlayoutexample3(); < pre> <p> <strong>Output:</strong> </p> <img src="//techcodeview.com/img/layout-manager/08/java-boxlayout.webp" alt="BoxLayout class example"> <h3>Example of BoxLayout Class with PAGE_AXIS</h3> <p>The following example shows how to use PAGE_AXIS.</p> <p> <strong>FileName:</strong> BoxLayoutExample4.java</p> <pre> // import statements import java.awt.*; import javax.swing.*; public class BoxLayoutExample4 extends Frame { Button buttons[]; // constructor of the class public BoxLayoutExample4() { JFrame f = new JFrame(); JPanel pnl = new JPanel(); buttons = new Button[5]; GridBagConstraints constrntObj = new GridBagConstraints(); constrntObj.fill = GridBagConstraints.VERTICAL; for (int i = 0; i <5; i++) { buttons[i]="new" button ('button ' + (i 1)); adding the buttons so that it can be displayed add(buttons[i]); } components will just like line is present on a page setlayout (new boxlayout(this, boxlayout.page_axis)); setsize(400, 400); setvisible(true); main method public static void main(string argvs[]) creating an object of class boxlayoutexample4 obj="new" boxlayoutexample4(); < pre> <p> <strong>Output:</strong> </p> <img src="//techcodeview.com/img/layout-manager/08/java-boxlayout-2.webp" alt="BoxLayout class example"> <p>The above output shows that the buttons are aligned horizontally. Now, we will display the buttons vertically using the PAGE_AXIS.</p> <p> <strong>FileName:</strong> BoxLayoutExample5.java</p> <pre> // import statementss import java.awt.*; import javax.swing.*; public class BoxLayoutExample5 extends Frame { Button buttons[]; // constructor of the class public BoxLayoutExample5() { JFrame f = new JFrame(); buttons = new Button[5]; // Creating a Box whose alignment is horizontal Box horizontalBox = Box.createHorizontalBox(); // ContentPane returns a container Container contentPane = f.getContentPane(); for (int i = 0; i <5; i++) { buttons[i]="new" button ('button ' + (i 1)); adding the buttons to box so that it can be displayed horizontalbox.add(buttons[i]); } and borderlayout content pane contentpane.add(horizontalbox, borderlayout.north); now, rendered components are vertically. is because aligned horizontally f.setlayout (new boxlayout(contentpane, boxlayout.page_axis)); f.setsize(400, 400); f.setvisible(true); main method public static void main(string argvs[]) creating an object of class boxlayoutexample5 obj="new" boxlayoutexample5(); < pre> <p> <strong>Output:</strong> </p> <img src="//techcodeview.com/img/layout-manager/08/java-boxlayout-3.webp" alt="BoxLayout class example"> <hr></5;></pre></5;></pre></5;></pre></5;i++)></pre></5;i++)>