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java初始化图片代码 java绘制图片代码

java图形化界面中如果我要设置四个按钮，然后摁每个按钮可以切换不同的图片，谁能帮我做一下代码给我参考

参考代码,

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注意图片的路径,拿不准的话,就使用绝对路径吧

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

//我的图片路径是 src\\images\\1.gif .有四张从1.jpg~~4.jpg

public class ImageDemo extends JFrame {

JLabel jl;

JPanel jp;

public ImageDemo() {

jp = new JPanel();

int i;

for (i = 0; i 4; i++) {

if(i ==0){//初始化的时候,默认显示的图片

jl = new JLabel(new ImageIcon("src\\images\\"+1+".gif"));

}

//按钮

JButton jb = new JButton("第"+(i+1)+"张图");

int z = i;

//当按钮点击的时候

jb.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

//设置jl的图片

jl.setIcon(new ImageIcon("src\\images\\"+(z+1)+".gif"));

}

});

jp.add(jb);

}

this.setLocation(200, 120);

this.setSize(500,200);

this.setLayout(new BorderLayout());

this.add(jl);

this.add(jp,BorderLayout.SOUTH);

this.setTitle("图片浏览");

this.setDefaultCloseOperation(EXIT_ON_CLOSE);

this.setVisible(true);

}

public static void main(String[] args) {

new ImageDemo();

}

image类型怎么初始化java

ava image类初始化

java image类初始化,无法初始化类javax.imageio.ImageIO

科普君冷知识

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我试图将一个

spring web应用程序部署到运行在

windows azure上的生产环境中的tomcat 7(尝试过ubuntu和windows datacenter vm).

遗憾的是,我在生成与

ImageIo一起使用的缩略图时检索到错误(下面的堆栈跟踪).

在开发过程中,我也使用了tomcat 7,所以我真的不明白,生产网络服务器有什么不同.

当我尝试通过“ImageIO.scanForPlugins();”加载模块时exakt同样的事情发生了.是不是ImageIO或javax.awt通常包含在标准的java7 jre中？

我想在META-INF / services / javax.io中设置一个子文件夹或者在堆模式下运行jvm,但没有解决下面的问题.我想我现在真的走在墙上,因为我不知道如何解决这个问题.在本地开发环境(Windows 8,Java7 64B,Tomcat7)上,我没有对上面的这些提示做任何事情(堆模式或类文件),并且一切都运行完美.有这样的事情,应用程序是在没有GPU或类似的服务器上运行的吗？

感谢您提前回复=)

HTTP Status 500 - Handler processing failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class javax.imageio.ImageIOException report

Handler processing failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class javax.imageio.ImageIO

org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class javax.imageio.ImageIO

org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:972)

org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)

org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)

org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)

javax.servlet.http.HttpServlet.service(HttpServlet.java:646)

javax.servlet.http.HttpServlet.service(HttpServlet.java:727)

org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)

org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)

org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)

org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)

org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)

org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)

org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)

org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)

org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)

org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:183)

org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)

org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)

org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)

org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)

org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)

org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)

java.lang.NoClassDefFoundError: Could not initialize class javax.imageio.ImageIO

ch.yooapps.resman.service.data.FileServiceImpl.createFile(FileServiceImpl.java:63)

sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

java.lang.reflect.Method.invoke(Method.java:606)

org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:319)

org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)

org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)

org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)

org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)

com.sun.proxy.$Proxy171.createFile(Unknown Source)

ch.yooapps.resman.application.controllers.rest.FileController.attacheFile(FileController.java:61)

sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

java.lang.reflect.Method.invoke(Method.java:606)

org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)

org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)

org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)

org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)

org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)

org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)

org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)