java显示图像代码 java怎么显示图片

java如何读取文件夹中的图片并在界面显示

下面给你提供一个实现，该实现采用了代理模式。这个实现包含两个文件，分别是Client.java和ImageIcoProxy.java，ImageIcoProxy.java负责了图片的延迟加载，你可以修改为不延迟即可。

Client.java的代码为：

import java.awt.Graphics;

import java.awt.Insets;

import javax.swing.Icon;

import javax.swing.JFrame;

public class Client extends JFrame {

private static int IMG_WIDTH = 510;

private static int IMG_HEIGHT = 317;

private Icon imgProxy = null;

public static void main(String[] args) {

Client app = new Client();

app.setVisible(true);

}

public Client() {

super("Virture Proxy Client");

imgProxy = new ImageIcoProxy("D:/test.jpg", IMG_WIDTH, IMG_HEIGHT);

this.setBounds(100, 100, IMG_WIDTH + 10, IMG_HEIGHT + 30);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

public void paint(Graphics g) {

super.paint(g);

Insets insets = getInsets();

imgProxy.paintIcon(this, g, insets.left, insets.top);

}

}

ImageIcoProxy.java的代码为：

import java.awt.Component;

import java.awt.Graphics;

import javax.swing.Icon;

import javax.swing.ImageIcon;

import javax.swing.SwingUtilities;

public class ImageIcoProxy implements Icon {

private ImageIcon realIcon = null;

private String imgName;

private int width;

private int height;

boolean isIconCreated = false;

public ImageIcoProxy(String imgName, int width, int height) {

this.imgName = imgName;

this.width = width;

this.height = height;

}

public int getIconHeight() {

return realIcon.getIconHeight();

}

public int getIconWidth() {

return realIcon.getIconWidth();

}

public void paintIcon(final Component c, Graphics g, int x, int y) {

if (isIconCreated) {

//已经加载了图片，直接显示

realIcon.paintIcon(c, g, x, y);

g.drawString("Just Test", x + 20, y + 370);

} else {

g.drawRect(x, y, width-1, height-1);

g.drawString("Loading photo...", x+20, y+20);

synchronized(this) {

SwingUtilities.invokeLater(new Runnable() {

public void run() {

try {

Thread.currentThread().sleep(2000);

realIcon = new ImageIcon(imgName);

isIconCreated = true;

} catch (Exception e) {

e.printStackTrace();

}

c.repaint();

}

}

);

}

}

}

}

java怎么显示本地图片

在面板上搞一个和面板一样大java显示图像代码的JLabel

然后java显示图像代码，通过JFileChooser获得路径，利用这个图片java显示图像代码的路径，构建一个ImageIcon

最后，根据这个ImageIcon去给JLabel对象setIcon(ImageIcon对象);

具体地：

1.panel.add(label,BorderLayout.CENTER);

2.ImageIcon icon = new ImageIcon(url);

3.label.setIcon(icon);

下面的代码你把 .JPG改成BMP试试看，O(∩_∩)O~

package com.shlq.sample;

import java.awt.BorderLayout;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import javax.swing.ImageIcon;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

public class ImagePane extends JPanel

{

JLabel jl = null;

ImageIcon img = null;

public ImagePane()

{

img = new ImageIcon( "E:\\Picture\\1.jpg ");

jl = new JLabel(img);

this.setLayout(new BorderLayout());

this.add(jl, BorderLayout.CENTER);

}

public static void main(String[] args)

{

JFrame test = new JFrame( "Image Pane ");

test.getContentPane().add(new ImagePane());

test.pack();

test.setVisible(true);

test.addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{

System.exit(0);

}

});

}

}

在窗体中，java显示图片怎么做

下面是一个JAVA显示图片的例子java显示图像代码，请参考：

package com.tarena.java;

import t.Image;

import .File;

import .IOException;

import ageio.ImageIO;

import javax.swing.ImageIcon;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.SwingUtilities;

/**

* 加载显示图象,需要JDK1.5或以上

*/

public class showtu extends JFrame {

public showtu(String bmpFile) {

Image image = null;

try {

image = ad(new File(bmpFile));

} catch (IOException ex) {

}

JLabel label = new JLabel(new ImageIcon(image));

add(label);

setDefaultCloseOperation(EXIT_ON_CLOSE);

pack();

}

public static void main(String[] args){

final String fileName = "F:\\456备用\\亮个相.JPG"; //换成java显示图像代码你要显示的图片

vokeLater(new Runnable(){

public void run(){

new showtu(fileName).setVisible(true);

}

});

}

}

关于java显示图像代码和java怎么显示图片的介绍到此就结束了，不知道你从中找到你需要的信息了吗 ？如果你还想了解更多这方面的信息，记得收藏关注本站。