Kajian 2 - JTextArea

JTextArea merupakan komponen yang mirip dengan JtextField tetapi dapat menampung lebih dar i satu baris.

Beikut contoh sintaknya :

import javax.swing.*;

import java.awt.*;

public class area extends JFrame {

            private JLabel label = new JLabel("Komentar");

            private JTextArea teks = new JTextArea(3, 20);

            public area() {

                        this.setTitle("Contoh JTextArea");

                        this.setLocation(200, 100);

                        this.setSize(350, 100);

                        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

                        this.setVisible(true);

                        this.getContentPane().add(this.label);

                        this.getContentPane().add(this.teks);

                        this.getContentPane().setLayout(new FlowLayout());

            }

            public static void main(String[] args) {

                        area tA = new area();

            }

}

Kajian 2 - JRadioButton

JRadioButton adalah komponen yang digunakan ketika pengguna perlu memilih satu diantara beberapa pilihan.

Berikut contoh sintaknya :

import javax.swing.ButtonGroup;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

public class kom3 {

            public static void main(String[] args) {

                        JFrame j = new JFrame();

                        j.setSize(300, 120);

                        j.setLocation(200, 300);

                        j.setVisible(true);

                        j.setTitle("tes");

                        j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

                        JLabel l = new JLabel(" APAKAH ANDA SUKA PELAJARAN JAVA?");

                        JRadioButton[] r = new JRadioButton[4];

                        r[0] = new JRadioButton("SANGAT SUKA");

                        r[1] = new JRadioButton("SUKA");

                        r[2] = new JRadioButton("BIASA");

                        r[3] = new JRadioButton("TIDAK SUKA");

                        JPanel p = new JPanel();

                        p.add(l);

                        ButtonGroup b = new ButtonGroup();

                        for (int i = 0; i < r.length; i++) {

                                    b.add(r[i]);

                                    p.add(r[i]);

                        }

                        j.add(p);

                        j.setVisible(true);

                        JButton bt = new JButton("KLIK");

                        p.add(bt);

            }

}

Kajian 2 - JCheckBox

JCheckBox adalah komponen yang digunakan ketika pengguna memerlukan komponen untuk melakukan satu atau banyak pilhan sekaligus.

berikut contoh sintaknya :

import javax.swing.*;

import java.awt.*;

public class checkbox extends JFrame {

            private JCheckBox cb1 = new JCheckBox("Pertama");

            private JCheckBox cb2 = new JCheckBox("Kedua");

            private JCheckBox cb3 = new JCheckBox("Ketiga");

            public checkbox() {

                        this.setLocation(200, 100);

                        this.setSize(300, 100);

                        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

            }

            public void komponen() {

                        this.getContentPane().add(this.cb1);

                        this.getContentPane().add(this.cb2);

                        this.getContentPane().add(this.cb3);

                        this.getContentPane().setLayout(new FlowLayout());

                        this.setVisible(true);

            }

            public static void main(String[] args) {

                        checkbox cB = new checkbox();

                        cB.komponen();

            }

}