import javax.swing.*;
import java.awt.*;public class ComboChartExample extends JPanel {@Overrideprotected void paintComponent(Graphics g) {super.paintComponent(g);// 数据int[] values = {100, 200, 150, 300, 250};int[] lineValues = {120, 180, 160, 280, 230};String[] labels = {"A", "B", "C", "D", "E"};int barWidth = 30;int xOffset = 80; // 调整 x 偏移以适应宽度// 绘制柱状图g.setColor(Color.BLUE);for (int i = 0; i < values.length; i++) {int x = xOffset + i * (barWidth + 50);int y = 350 - values[i];g.fillRect(x, y, barWidth, values[i]);}// 绘制折线图g.setColor(Color.RED);for (int i = 0; i < lineValues.length - 1; i++) {int x1 = xOffset + i * (barWidth + 50) + barWidth / 2;int y1 = 350 - lineValues[i];int x2 = xOffset + (i + 1) * (barWidth + 50) + barWidth / 2;int y2 = 350 - lineValues[i + 1];g.drawLine(x1, y1, x2, y2);}// 绘制折线图的点for (int i = 0; i < lineValues.length; i++) {int x = xOffset + i * (barWidth + 50) + barWidth / 2;int y = 350 - lineValues[i];g.fillOval(x - 3, y - 3, 6, 6);}// 绘制标签g.setColor(Color.BLACK);for (int i = 0; i < labels.length; i++) {int x = xOffset + i * (barWidth + 50) + barWidth / 2 - 10;int y = 360;g.drawString(labels[i], x, y);}// 绘制Y轴刻度for (int i = 0; i <= 300; i += 50) {int y = 350 - i;g.drawLine(70, y, 75, y);g.drawString(String.valueOf(i), 30, y + 5);}}private static void createAndShowGUI() {JFrame frame = new JFrame("折柱图案例");frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.add(new ComboChartExample());frame.setSize(600, 500); // 调整窗口宽度frame.setLocationRelativeTo(null);frame.setVisible(true);}public static void main(String[] args) {SwingUtilities.invokeLater(ComboChartExample::createAndShowGUI);}
}