随机单词文章构造器（Random Term Paper Writer）

//Random term paper writer
//Java how to program, 5/e, Exercise 11.9
package StringsAndCharacters;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class RandomTermPaperWriter extends JFrame{

private String[] article={"the","a","one","some","any"};
private String[] noun={"boy","girl","dog","town","car"};
private String[] verb={"drove","jumped","ran","walked","skipped"};
private String[] preposition={"to","from","over","under","on"};
private String[] sentences=new String[20];

JTextArea output;
JScrollPane scroller;
public RandomTermPaperWriter()
{ super("Random term paper writer");

Container container=getContentPane();
container.setLayout(new FlowLayout());

JLabel hint1Label=new JLabel("Press ");
container.add(hint1Label);

JButton startButton=new JButton("Start");
container.add(startButton);
startButton.addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent event){
displayPaper();
}

}
);

JLabel hint2Label=new JLabel(" to write paper.");
container.add(hint2Label);
output=new JTextArea(20,40);
scroller=new JScrollPane(output);
container.add(scroller);

setSize(600,500);
setVisible(true);
}

public static void main(String args[])
{
RandomTermPaperWriter paperWriter=new RandomTermPaperWriter();
paperWriter.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void displayPaper(){

for (int i=0;i<20;i++){
int[] random=new int[6];
for (int j=0;j<6;j++){
random[j]=(int)(5*Math.random());
}
sentences[i]=article[random[0]]+" "+noun[random[1]]+" "+verb[random[2]]+" "
+preposition[random[3]]+" "+article[random[4]]+" "+noun[random[5]];
output.append(sentences[i]+"/n");
}

}

}

A snapshot of program execution: