网站建设资讯

NEWS

网站建设资讯

java代码简单图片例子,JAVA代码图片

给段最简单的java代码 让我新手看一下

最简单的java代码肯定就是这个了,如下:

创新互联建站一直秉承“诚信做人,踏实做事”的原则,不欺瞒客户,是我们最起码的底线! 以服务为基础,以质量求生存,以技术求发展,成交一个客户多一个朋友!为您提供成都网站设计、做网站、成都外贸网站建设公司、成都网页设计、小程序制作、成都网站开发、成都网站制作、成都软件开发、重庆App定制开发是成都本地专业的网站建设和网站设计公司,等你一起来见证!

public class MyFirstApp

{

public static void main(String[] args)

{

System.out.print("Hello world");

}

}

“hello world”就是应该是所有学java的新手看的第一个代码了。如果是零基础的新手朋友们可以来我们的java实验班试听,有免费的试听课程帮助学习java必备基础知识,有助教老师为零基础的人提供个人学习方案,学习完成后有考评团进行专业测试,帮助测评学员是否适合继续学习java,15天内免费帮助来报名体验实验班的新手快速入门java,更好的学习java!

求大神帮忙JAVA代码 实现下面图片所达到的效果。 要代码 最好简单点的

//Subject.java

/**

* 科目类

*/

public class Subject {

/** 名称 */

private String name;

/** 成绩 */

private int score;

public Subject(String name,int score){

this.name = name;

this.score = score;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getScore() {

return score;

}

public void setScore(int score) {

this.score = score;

}    

}

import java.util.List;

//Student.java

/**

* 学生类

*/

public class Student{

/** 姓名 */

private String name;

/** 学科 */

private ListSubject subjects;

/** 总分  */

private int totalScore = 0;

/** 平均分 */

private int avgScore = 0;

public Student(String name,ListSubject subjects){

this.name = name;

this.subjects = subjects;

if(subjects != null  subjects.size()  0){

for(Subject s : subjects){

totalScore += s.getScore();

}

avgScore = totalScore / subjects.size();

}

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public ListSubject getSubjects() {

return subjects;

}

public void setSubjects(ListSubject subjects) {

this.subjects = subjects;

}

public int getTotalScore() {

return totalScore;

}

public int getAvgScore() {

return avgScore;

}    

}

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Comparator;

import java.util.List;

import java.util.Scanner;

//StudentScore.java

/**

* 主测试程序

*/

public class StudentScore {

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

System.out.println("请输入课程数");

int subjectNum = scanner.nextInt();

System.out.println("请输入人数");

int stuNum = scanner.nextInt();

String[] subjectNames = new String[subjectNum];

for(int i = 0; i  subjectNum; i++){

System.out.println("请输入第" + (i + 1) + "门科目名称");

subjectNames[i] = scanner.next();

}

String[] stuNames = new String[stuNum];

for(int i = 0; i  stuNum; i++){

System.out.println("请输入第" + (i + 1) + "个学员名称");

stuNames[i] = scanner.next();

}

Student[] stuArr = new Student[stuNum];

for(int i = 0; i  stuNum; i++){

ListSubject subjects = new ArrayListSubject();

for(int j = 0; j  subjectNum; j++){

System.out.println("输入" + stuNames[i] + "的" + subjectNames[j] + "成绩");

int score = scanner.nextInt();

Subject subject = new Subject(subjectNames[j], score);

subjects.add(subject);

}

stuArr[i] = new Student(stuNames[i], subjects);

}

//按照总成绩从高到底排序

Arrays.sort(stuArr, new ComparatorStudent() {

@Override

public int compare(Student stu1, Student stu2) {

if(stu1.getTotalScore()  stu2.getTotalScore()){

return 1;

} else if(stu1.getTotalScore()  stu2.getTotalScore()){

return -1;

} else {

return 0;

}

}

});

//输出标题头

final String FORMAT = "\t";

System.out.print("姓名" + FORMAT);

for(int i = 0;i  subjectNum; i++){

System.out.print(subjectNames[i] + FORMAT);

}

System.out.println("总分" + FORMAT + "平均分" + FORMAT + "排名");

//按照排名输出

for(int i = 0; i  stuArr.length; i++){

System.out.print(stuArr[i].getName() + FORMAT);

for(int j = 0; j  subjectNum; j++){

System.out.print(stuArr[i].getSubjects().get(j).getScore() + FORMAT);

}

System.out.println(stuArr[i].getTotalScore() + FORMAT + stuArr[i].getAvgScore() + FORMAT + "第" + (i + 1) + "名");

}

}

}

java图片加水印代码 最好有实例!!!先谢了!!

文字水印

import java.awt.*;

import java.awt.image.*;

import java.io.*;

import javax.swing.*;

import com.sun.image.codec.jpeg.*;

public class WaterSet {

/**

* 给图片添加水印

*

* @param filePath

* 需要添加水印的图片的路径

* @param markContent

* 水印的文字

* @param markContentColor

* 水印文字的颜色

* @param qualNum

* 图片质量

* @return

*/

public boolean createMark(String filePath, String markContent,

Color markContentColor, float qualNum) {

ImageIcon imgIcon = new ImageIcon(filePath);

Image theImg = imgIcon.getImage();

int width = theImg.getWidth(null);

int height = theImg.getHeight(null);

BufferedImage bimage = new BufferedImage(width, height,

BufferedImage.TYPE_INT_RGB);

Graphics2D g = bimage.createGraphics();

g.setColor(markContentColor);

g.setBackground(Color.white);

g.drawImage(theImg, 0, 0, null);

g.drawString(markContent, width / 5, height / 5); // 添加水印的文字和设置水印文字出现的内容

g.dispose();

try {

FileOutputStream out = new FileOutputStream(filePath);

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);

JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bimage);

param.setQuality(qualNum, true);

encoder.encode(bimage, param);

out.close();

} catch (Exception e) {

return false;

}

return true;

}

}

图片水印

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.FileOutputStream;

import javax.imageio.ImageIO;

import com.sun.image.codec.jpeg.JPEGCodec;

import com.sun.image.codec.jpeg.JPEGImageEncoder;

public final class ImageUtils {

public ImageUtils() {

}

/*

* public final static String getPressImgPath() { return ApplicationContext

* .getRealPath("/template/data/util/shuiyin.gif"); }

*/

/**

* 把图片印刷到图片上

*

* @param pressImg --

* 水印文件

* @param targetImg --

* 目标文件

* @param x

* --x坐标

* @param y

* --y坐标

*/

public final static void pressImage(String pressImg, String targetImg,

int x, int y) {

try {

//目标文件

File _file = new File(targetImg);

Image src = ImageIO.read(_file);

int wideth = src.getWidth(null);

int height = src.getHeight(null);

BufferedImage image = new BufferedImage(wideth, height,

BufferedImage.TYPE_INT_RGB);

Graphics g = image.createGraphics();

g.drawImage(src, 0, 0, wideth, height, null);

//水印文件

File _filebiao = new File(pressImg);

Image src_biao = ImageIO.read(_filebiao);

int wideth_biao = src_biao.getWidth(null);

int height_biao = src_biao.getHeight(null);

g.drawImage(src_biao, (wideth - wideth_biao) / 2,

(height - height_biao) / 2, wideth_biao, height_biao, null);

//水印文件结束

g.dispose();

FileOutputStream out = new FileOutputStream(targetImg);

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);

encoder.encode(image);

out.close();

} catch (Exception e) {

e.printStackTrace();

}

}

/**

* 打印文字水印图片

*

* @param pressText

* --文字

* @param targetImg --

* 目标图片

* @param fontName --

* 字体名

* @param fontStyle --

* 字体样式

* @param color --

* 字体颜色

* @param fontSize --

* 字体大小

* @param x --

* 偏移量

* @param y

*/

public static void pressText(String pressText, String targetImg,

String fontName, int fontStyle, int color, int fontSize, int x,

int y) {

try {

File _file = new File(targetImg);

Image src = ImageIO.read(_file);

int wideth = src.getWidth(null);

int height = src.getHeight(null);

BufferedImage image = new BufferedImage(wideth, height,

BufferedImage.TYPE_INT_RGB);

Graphics g = image.createGraphics();

g.drawImage(src, 0, 0, wideth, height, null);

// String s="";

g.setColor(Color.RED);

g.setFont(new Font(fontName, fontStyle, fontSize));

g.drawString(pressText, wideth - fontSize - x, height - fontSize

/ 2 - y);

g.dispose();

FileOutputStream out = new FileOutputStream(targetImg);

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);

encoder.encode(image);

out.close();

} catch (Exception e) {

System.out.println(e);

}

}

public static void main(String[] args) {

pressImage("F:/logo.png", "F:/123.jpg", 0, 0);

}

}

高分求java代码,用来生成图片文件!!

//defaultSuffix是jpg

public static final boolean resizeImage(String fileName, String suffix) throws Exception {

boolean uploaded = false;

BufferedImage input;

if(suffix.equalsIgnoreCase("tif")||suffix.equalsIgnoreCase("tiff")||suffix.equalsIgnoreCase("png")) {

RenderedImage image = JAI.create("fileload", TurbineServlet.getRealPath(imageRoot + fileName+"."+suffix));

WritableRaster raster = image.copyData(null);

BufferedImage bi = new BufferedImage( image.getColorModel(), raster, true, null);

BufferedImage bi2 = new BufferedImage( maxResizeDimension, bi.getHeight()*maxResizeDimension/bi.getWidth(), BufferedImage.TYPE_INT_RGB);

Graphics2D g2 = bi2.createGraphics();

g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);

g2.setBackground(java.awt.Color.WHITE);//把tiff和png转换后的背景设置为白色

g2.fillRect(0, 0, maxResizeDimension, bi.getHeight()*maxResizeDimension/bi.getWidth());

g2.drawImage(bi, 0, 0, maxResizeDimension, bi.getHeight()*maxResizeDimension/bi.getWidth(), null);

PlanarImage pi = PlanarImage.wrapRenderedImage(bi2);

JAI.create("FileStore", pi, TurbineServlet.getRealPath(resizeRoot + fileName+"."+defaultSuffix).replaceAll("\\\\","\\\\\\\\"), "JPEG", new JPEGEncodeParam());

input = pi.getAsBufferedImage();

int w = maxThumbDimension, h = maxThumbDimension;

BufferedImage output = new BufferedImage(w, h, BufferedImage.TYPE_3BYTE_BGR);

Graphics2D g = output.createGraphics();

g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);

g.drawImage(input,0,0,w,h, null);

ImageIO.write(output, defaultSuffix, new File(TurbineServlet.getRealPath(thumbRoot + fileName+"."+defaultSuffix)));

}

else {

input = ImageIO.read(new File(TurbineServlet.getRealPath(imageRoot + fileName+"."+suffix)));

int w = maxThumbDimension, h = maxThumbDimension;

BufferedImage output = new BufferedImage(w, h, BufferedImage.TYPE_3BYTE_BGR);

Graphics2D g = output.createGraphics();

g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);

g.drawImage(input,0,0,w,h, null);

ImageIO.write(output, defaultSuffix, new File(TurbineServlet.getRealPath(thumbRoot + fileName+"."+defaultSuffix)));

BufferedImage output2 = new BufferedImage(maxResizeDimension, input.getHeight()*maxResizeDimension/input.getWidth(), BufferedImage.TYPE_3BYTE_BGR);

Graphics2D g2 = output2.createGraphics();

g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);

g2.drawImage(input,0,0,maxResizeDimension, input.getHeight()*maxResizeDimension/input.getWidth(), null);

ImageIO.write(output2, defaultSuffix, new File(TurbineServlet.getRealPath(resizeRoot + fileName+"."+defaultSuffix)));

}

uploaded = true;

return uploaded;

}

用java在jsp中显示图片,求例子代码

%@ page language="java" pageEncoding="UTF-8"%

%@page import="java.awt.image.BufferedImage"%

%@page import="javax.imageio.ImageIO"%

%@page import="java.io.File"%

%

out.clear();

response.setContentType("image/png");

BufferedImage image = ImageIO.read(new File("D:\\mark.png"));

ImageIO.write(image, "png", response.getOutputStream());

%

我这样写没有问题,你试试。我来解释一下楼上的疑问,html标签不可能引用到本地的文件,比如C:\\xx.jpg你指定的路径得是web目录下的,动态生成图片一般用servlet实现,比如验证码之类的。

JAVA 一个可以打开图片的图形界面,求代码。

以前写的一个比较粗糙的例子。

import javax.swing.*;

import java.awt.event.*;

import java.awt.*;

import java.io.*;

public class Tupian extends JFrame implements ActionListener{

JLabel jl=new JLabel("图片");

JMenuBar jmb=new JMenuBar();

JMenu jm=new JMenu("文件");

JMenuItem jmi=new JMenuItem("选择图片");

JPanel jp=new JPanel(new FlowLayout(FlowLayout.CENTER));

JFileChooser chooser=new JFileChooser();

public Tupian() {

super("浏览图片");

jmb.add(jm);

jm.add(jmi);

jp.add(jl);

jmi.addActionListener(this);

this.setDefaultCloseOperation(this.EXIT_ON_CLOSE);

this.setLayout(new BorderLayout());

this.add(jmb,BorderLayout.NORTH);

this.add(jp,BorderLayout.CENTER);

this.setSize(800,600);

this.setVisible(true);

}

public void actionPerformed(ActionEvent e){

int i=chooser.showOpenDialog(this);

if(i==chooser.APPROVE_OPTION){

Image image=new ImageIcon(chooser.getSelectedFile().getPath()).getImage();

image=image.getScaledInstance(400, 400, Image.SCALE_DEFAULT );//调整图像大小400,400

jl.setIcon(new ImageIcon(image));

jl.setText("");

}

if(i==chooser.CANCEL_OPTION)return;

}

public static void main (String[] args) {

new Tupian();

}

}


文章标题:java代码简单图片例子,JAVA代码图片
URL链接:http://njwzjz.com/article/phedip.html