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Razred Java GridLayout se uporablja za razporeditev komponent v pravokotno mrežo. V vsakem pravokotniku je prikazana ena komponenta.

Konstruktorji razreda GridLayout

GridLayout():ustvari mrežno postavitev z enim stolpcem na komponento v vrsti.GridLayout (int vrstic, int stolpcev):ustvari mrežno postavitev z danimi vrsticami in stolpci, vendar brez vrzeli med komponentami.GridLayout (int vrstic, int stolpcev, int hgap, int vgap):ustvari mrežno postavitev z danimi vrsticami in stolpci skupaj z danimi vodoravnimi in navpičnimi vrzelmi.

Primer razreda GridLayout: uporaba konstruktorja GridLayout().

Konstruktor GridLayout() ustvari samo eno vrstico. Naslednji primer prikazuje uporabo konstruktorja brez parametrov.

java seznami

Ime datoteke: GridLayoutExample.java

 // import statements import java.awt.*; import javax.swing.*; public class GridLayoutExample { JFrame frameObj; // constructor GridLayoutExample() { frameObj = new JFrame(); // creating 9 buttons JButton btn1 = new JButton('1'); JButton btn2 = new JButton('2'); JButton btn3 = new JButton('3'); JButton btn4 = new JButton('4'); JButton btn5 = new JButton('5'); JButton btn6 = new JButton('6'); JButton btn7 = new JButton('7'); JButton btn8 = new JButton('8'); JButton btn9 = new JButton('9'); // adding buttons to the frame // since, we are using the parameterless constructor, therfore; // the number of columns is equal to the number of buttons we // are adding to the frame. The row count remains one. frameObj.add(btn1); frameObj.add(btn2); frameObj.add(btn3); frameObj.add(btn4); frameObj.add(btn5); frameObj.add(btn6); frameObj.add(btn7); frameObj.add(btn8); frameObj.add(btn9); // setting the grid layout using the parameterless constructor frameObj.setLayout(new GridLayout()); frameObj.setSize(300, 300); frameObj.setVisible(true); } // main method public static void main(String argvs[]) { new GridLayoutExample(); } } 

Izhod:

Primer razreda GridLayout: uporaba konstruktorja GridLayout(int rows, int columns)

Ime datoteke: MyGridLayout.java

 import java.awt.*; import javax.swing.*; public class MyGridLayout{ JFrame f; MyGridLayout(){ f=new JFrame(); JButton b1=new JButton('1'); JButton b2=new JButton('2'); JButton b3=new JButton('3'); JButton b4=new JButton('4'); JButton b5=new JButton('5'); JButton b6=new JButton('6'); JButton b7=new JButton('7'); JButton b8=new JButton('8'); JButton b9=new JButton('9'); // adding buttons to the frame f.add(b1); f.add(b2); f.add(b3); f.add(b4); f.add(b5); f.add(b6); f.add(b7); f.add(b8); f.add(b9); // setting grid layout of 3 rows and 3 columns f.setLayout(new GridLayout(3,3)); f.setSize(300,300); f.setVisible(true); } public static void main(String[] args) { new MyGridLayout(); } } 

Izhod:

Primer razreda GridLayout: uporaba konstruktorja GridLayout(int rows, int columns, int hgap, int vgap)

Naslednji primer vstavi vodoravne in navpične vrzeli med gumbe z uporabo parametriranega konstruktorja GridLayout(int rows, int columns, int hgap, int vgap).

Ime datoteke: GridLayoutExample1.java

obj v Javi

 // import statements import java.awt.*; import javax.swing.*; public class GridLayoutExample1 { JFrame frameObj; // constructor GridLayoutExample1() { frameObj = new JFrame(); // creating 9 buttons JButton btn1 = new JButton('1'); JButton btn2 = new JButton('2'); JButton btn3 = new JButton('3'); JButton btn4 = new JButton('4'); JButton btn5 = new JButton('5'); JButton btn6 = new JButton('6'); JButton btn7 = new JButton('7'); JButton btn8 = new JButton('8'); JButton btn9 = new JButton('9'); // adding buttons to the frame // since, we are using the parameterless constructor, therefore; // the number of columns is equal to the number of buttons we // are adding to the frame. The row count remains one. frameObj.add(btn1); frameObj.add(btn2); frameObj.add(btn3); frameObj.add(btn4); frameObj.add(btn5); frameObj.add(btn6); frameObj.add(btn7); frameObj.add(btn8); frameObj.add(btn9); // setting the grid layout // a 3 * 3 grid is created with the horizontal gap 20 // and vertical gap 25 frameObj.setLayout(new GridLayout(3, 3, 20, 25)); frameObj.setSize(300, 300); frameObj.setVisible(true); } // main method public static void main(String argvs[]) { new GridLayoutExample(); } } 

Izhod: