java 2d drawing example sharing (use java to draw pictures)

The Java 2D API provides Java programs with two-dimensional images, text and graphics capabilities through the extension of the Abstract Window Toolbox (AWT). This complex rendering package supports linear images, text and graphics, providing flexible and powerful frameworks for developers of rich user interfaces, complex drawing programs and image processors. Java 2D objects appear in a plane, called the user coordinate system space, and the device coordinate system space. When an object is rendered on the screen or in a printer, the user space coordinate system is converted to the device space coordinate system.

The code copy is as follows:

import java.awt.BasicStroke;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.RenderingHints;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import java.util.Iterator;

import java.util.Random;

import javax.imageio.*;

import javax.imageio.stream.ImageOutputStream;

public class test {

public static void main(String[] args) throws IOException {

int width = 800;

int height = 800;

BufferedImage image = new BufferedImage(

width, height, BufferedImage.TYPE_INT_RGB);

Graphics2D g2d = image.createGraphics();

g2d.setColor(Color.white);

g2d.fillRect(0, 0, width, height);

g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,

RenderingHints.VALUE_ANTIALIAS_ON);

Random random = new Random();

int wo = 0;

int ho = 0;

for (int i = 0; i < 10; i++) {

int x = random.nextInt(width);

int y = random.nextInt(height);

g2d.setColor(new Color(random.nextInt(256),

random.nextInt(256), random.nextInt(256));

g2d.setStroke(new BasicStroke(1));

g2d.drawString("node"+i, x, y);

g2d.drawArc(x, y, 20, 20, 0, 360);

if(i!=0){

g2d.drawLine(wo, ho, x, y);

}

wo = x;

ho = y;

}

g2d.dispose();

ImageWriter writer = null;

ImageTypeSpecifier type =

ImageTypeSpecifier.createFromRenderedImage(image);

Iterator iter = ImageIO.getImageWriters(type, "jpg");

if (iter.hasNext()) {

writer = (ImageWriter)iter.next();

}

if (writer == null) {

return;

}

IIOImage iioImage = new IIOImage(image, null, null);

ImageWriteParam param = writer.getDefaultWriteParam();

param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);

param.setCompressionQuality((float) ((10) / 10.0));

ImageOutputStream outputStream =

ImageIO.createImageOutputStream(new File("C:/test.jpg"));

writer.setOutput(outputStream);

writer.write(null, iioImage, param);

}

}