Web15 mar 2012 · java draw line as the mouse is moved. I would like to add a feature to my application which allows the user to draw a straight line by clicking the mouse at the start … WebJava, draw on a specific JPanel. I'm working on a program which is drawing a linear function based on the inputs given by the user. I managed to create a method which draws the …

Basic drawing in Java 2D - ZetCode

Web15 mar 2024 · 我可以回答您的问题，这是一个关于Java编写用户登录界面的问题。 首先，Java可以使用Swing或JavaFX来创建GUI（图形用户界面）。这些库提供了各种组件和布局管理器，使您可以创建丰富的用户界面。对于此特定问题，您可以使用Java Swing来创建用户登录界面。 Web10 ago 2024 · In Java, to draw a line between two points (x1, y1) and (x2, y2) onto graphics context represented by a Graphics object, use the following method: drawLine(int x1, int … schwans fried rice

swing - How to delete Drawn Line in java? - Stack Overflow

Web6 ott 2013 · to this: g.drawLine (points [i].x, points [i].y, pointends [i].x, pointends [i].y); This will get rid of the NullPointerException and the lines will be drawn correctly once you … Web以下是一个简单的示例： ```java import java.awt.Graphics; import javax.swing.JPanel; public class MyPanel extends JPanel { @Override protected void paintComponent(Graphics g) { super.paintComponent(g); // 在这里绘制您的图形 g.drawLine(0, 0, getWidth(), getHeight()); g.drawLine(0, getHeight(), getWidth(), 0); } } ``` 在这个例子中，我们覆盖 … Web15 nov 2024 · private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { drawLine = true; repaint(); } private void … schwans gallon ice cream