adding scrollbar to a frame

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JavaSE

JavaSE6

How adjust the boxes to come in one by one order


package hospitalmanagement;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.Label;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;

public class HospitalRooms extends JFrame {

JScrollPane scrollpane;
Properties props = null;

public HospitalRooms() throws IOException {
super("JScrollPane Demonstration");
setSize(450, 500);
setDefaultCloseOperation(EXIT_ON_CLOSE);
init();
setVisible(true);
getData();
}

public void getData() throws IOException {
File file = new File("");
String separator = System.getProperty("file.separator");
props = new Properties();
FileInputStream fis = null;
try {
fis = new FileInputStream(file.getAbsolutePath() + separator + "resources" + separator + "resource.properties");

props.load(fis);
} catch (IOException e) {
e.printStackTrace();
} finally {
fis.close();
}
}

public void init() {
setSize(350,550);
setResizable(false);

JPanel p = new JPanel(new GridLayout(0,3,2,5));
scrollpane = new JScrollPane(p);
//scrollpane.setBounds(15, 50, 300, 400);
scrollpane.setPreferredSize(new Dimension(340,100));
getContentPane().add(scrollpane,BorderLayout.WEST);

// String NumberOfBeds = props.getProperty("NumberOfBeds");
// int beds = Integer.parseInt(NumberOfBeds);
// System.out.println("Beds" + beds);
Label label1 = new Label();
label1.setBounds(30, 5, 150, 24);
//label1.setBounds(200, 5, 150, 24);
label1.setText("Room Number");
p.add(label1);

Label label2 = new Label();
label2.setBounds(200, 5, 150, 24);
label2.setText("Number of Beds");
p.add(label2);
/* if (NumberOfBeds.equals("0") || NumberOfBeds.equals(" ")) {
label1.setBounds(150, 5, 150, 24);
label1.setText("NO ROOMS AVILABLE");
}*/


int j = 0;

for (int i = 0; i < 100; i++) {

JTextField t = new JTextField();
// t.setBounds(200, 30+j , 200, 24);
p.add(t);

Label label = new Label();
//label.setBounds(200, 30 + j, 20, 24);
label.setText(":");
p.add(label);

JTextField t1 = new JTextField();
// t1.setBounds(180, 30 + j, 100, 24);
p.add(t1);


j = j + 30;


}

}

public static void main(String args[]) throws IOException {
new HospitalRooms();
}
}

ROOM NUMBER ROOMS AVILABLE
textbox : textbox
textbox : textbox
textbox : textbox

output should b in this format.Please help me trying a lot to solve this.