根据我所拥有的,有人能给我一个例子,说明如何将命令行args或stdin从main传递给名为drawOnGrid的类吗?我很难理解它。基本上我需要使用“g.drawString(argOne,10,10);”而不是drawOval或drawLine。我附上了我的代码。
import java.awt.*;
import javax.swing.*;
import java.util.*;
public class Tictactoe extends JFrame {
//construct a figurePanel
public Tictactoe() {
Container RandomTicTacToePanel = getContentPane();
RandomTicTacToePanel.setLayout(new GridLayout(3, 3));
for (int i = 0; i < 9; i++) {
RandomTicTacToePanel.add(new drawOnGrid());
}
}
//Main method
public static void main(String[] args) {
String argOne;
String argTwo;
Scanner in = new Scanner(System.in);
int length = args.length;
if (length <= 0) {
System.out.println("Please enter player One's symbol: ");
argOne = in.nextLine();
System.out.println("Please enter player Two's symbol: ");
argTwo = in.nextLine();
in.close();
}
Tictactoe Tframe = new Tictactoe();
Tframe.setTitle("Tic Tac Toe Panel: Random Entries");
Tframe.setSize(350, 350);
Tframe.setResizable(true);
Tframe.setLocationRelativeTo(null);
Tframe.setVisible(true);
Tframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
class drawOnGrid extends JPanel {
//overide the paintComponent
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
int random = (int) (Math.random() * 3);
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
if (random == 0) {
System.out.print(" ");
} else if (random == 1) {
g.drawOval(10, 10, getWidth() - 20, getHeight() - 20);
} else if (random == 2) {
g.drawLine(10, 10, getWidth() - 10, getHeight() - 10);
g.drawLine(getWidth() - 10, 10, 10, getHeight() - 10);
}
}
}
}
}
}
我真的很感激。谢谢。
答案 0 :(得分:2)
试试这个:
import java.awt.*;
import javax.swing.*;
import java.util.*;
public class Tictactoe extends JFrame {
//construct a figurePanel
public Tictactoe(String text) {
Container RandomTicTacToePanel = getContentPane();
RandomTicTacToePanel.setLayout(new GridLayout(3, 3));
for (int i = 0; i < 9; i++) {
RandomTicTacToePanel.add(new drawOnGrid(text));
}
}
//Main method
public static void main(String[] args) {
String argOne = null; // Init with null
String argTwo = null; // Init with null
Scanner in = new Scanner(System.in);
int length = args.length;
if (length <= 0) {
System.out.println("Please enter player One's symbol: ");
argOne = in.nextLine();
System.out.println("Please enter player Two's symbol: ");
argTwo = in.nextLine();
in.close();
} else if(length == 1) {
argOne = args[0];
} else if(length == 2) {
argOne = args[0];
argTwo = args[1];
}
Tictactoe Tframe = new Tictactoe(argOne);
Tframe.setTitle("Tic Tac Toe Panel: Random Entries");
Tframe.setSize(350, 350);
Tframe.setResizable(true);
Tframe.setLocationRelativeTo(null);
Tframe.setVisible(true);
Tframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
class drawOnGrid extends JPanel {
private String text;
public drawOnGrid(String text) {
this.text = text;
}
//overide the paintComponent
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
int random = (int) (Math.random() * 3);
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
if (random == 0) {
System.out.print(" ");
} else if (random == 1) {
g.drawOval(10, 10, getWidth() - 20, getHeight() - 20);
} else if (random == 2) {
g.drawLine(10, 10, getWidth() - 10, getHeight() - 10);
g.drawLine(getWidth() - 10, 10, 10, getHeight() - 10);
}
}
}
}
}