android studio 错误: 程序包javax.swing不存在

已采纳

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不知道更新了啥，就找不到jdk，引入不了javax包

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/—妠邂莳珖 8月前
1、项目右键，选择“build path”-->add libraries -->jre system library -->alternat jre:

2、若installed jres配置的没有问题，请跳过此步骤。选择“installed jres”-->”edit..”。

在JRE home 中配置java环境中的jre的目录所在，如：c:\Program Files\Java\jre6。

JRE name:可任意起名字，如：jre6。-->"finish"。

3、选择“installed jres”-->选中步骤2中配置的jre6，”ok”-->“finish”。即可看到项目中多了一个jar包。红线消失。

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从今以后生命中的每一秒都属于我爱的人 8月前
javax.swing是桌面UI库，android应该是用不了的。

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capfjian 8月前
你用eclipse,myeclipse,idea,netbean，学swing ui不香吗？反正都是学习知识，多学点IDE没有坏处
反正ui也不会用java来写

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2年前

回答 2 已采纳问题描述 : 1. 仅当静态资源请求时触发 2. 仅是火狐浏览器触发 3. 仅当Tomcat7以上触发 4. 有个类似的项目不触发此异常其中触发错误的请求: /livestock/res/assets/ico/apple-touch-icon-152x152.png /livestock/res/assets/vendor/font-awesome/fonts/fontawesome-webfont.woff2 神奇的bug ``` org.apache.catalina.connector.ClientAbortException: java.io.IOException: APR error: -730053 at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:393) at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:426) at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:339) at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:418) at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:406) at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:97) at org.springframework.util.StreamUtils.copy(StreamUtils.java:138) at org.springframework.http.converter.ResourceHttpMessageConverter.writeContent(ResourceHttpMessageConverter.java:110) at org.springframework.http.converter.ResourceHttpMessageConverter.writeInternal(ResourceHttpMessageConverter.java:102) at org.springframework.http.converter.ResourceHttpMessageConverter.writeInternal(ResourceHttpMessageConverter.java:45) java.io.IOException: APR error: -730053 at org.springframework.http.converter.AbstractHttpMessageConverter.write(AbstractHttpMessageConverter.java:226) at org.springframework.web.servlet.resource.ResourceHttpRequestHandler.handleRequest(ResourceHttpRequestHandler.java:480) at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:51) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2463) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2452) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) ```
java swing 按钮事件处理问题 java
4年前

回答 2 已采纳 import javax.swing.*; import java.awt.*; import java.awt.event.*; public class Hello { static int i; public static void main (String args[]) { String s[] = {"7","8","9","4","5","6","1","2","3"}; JButton b[] = new JButton[9]; JFrame frame = new JFrame(); frame.setLayout(new GridLayout(3,3,3,3)); for(i = 0; i<s.length; i++){ b[i] = new JButton(s[i]); frame.add(b[i]); } frame.setLocation(200,200); frame.setSize(380,390); frame.setVisible(true); for(i = 0; i<b.length; i++){ b[i].addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent arg) { if(arg.getSource() == b[i]){ System.out.println(b[i].getText()); } } }); } } } 编译不报错，运行后按下按钮报错： Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 9 at Hello$1.actionPerformed(Hello.java:24) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) at java.awt.Component.processMouseEvent(Component.java:6533) at javax.swing.JComponent.processMouseEvent(JComponent.java:3324) at java.awt.Component.processEvent(Component.java:6298) at java.awt.Container.processEvent(Container.java:2236) at java.awt.Component.dispatchEventImpl(Component.java:4889) at java.awt.Container.dispatchEventImpl(Container.java:2294) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466) at java.awt.Container.dispatchEventImpl(Container.java:2280) at java.awt.Window.dispatchEventImpl(Window.java:2746) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758) at java.awt.EventQueue.access$500(EventQueue.java:97) at java.awt.EventQueue$3.run(EventQueue.java:709) at java.awt.EventQueue$3.run(EventQueue.java:703) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86) at java.awt.EventQueue$4.run(EventQueue.java:731) at java.awt.EventQueue$4.run(EventQueue.java:729) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:728) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
spring mvc+ibatis+oracle ORA-02289: 序列不存在
4年前

回答 6 已采纳代码是从svn更新下来的,在别人机器的运行环境下都可以正常运行,在我的环境下就水土不服了,请大神指点 sql如下: select SEQ_SIAPP_COUPON_NO.nextval from dual 错误信息如下: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.paic.mhis.siapp.core.rps.proxy.MethodInvoker.invoke(MethodInvoker.java:27) at com.paic.mhis.siapp.core.rps.proxy.MethodInvoker$$FastClassByCGLIB$$91548d27.invoke() at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149) at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) at com.paic.mhis.siapp.admin.general.logging.aop.LoggerInterceptor.invoke(LoggerInterceptor.java:45) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622) at com.paic.mhis.siapp.admin.general.logging.aop.SmsMethodInvoker$$EnhancerByCGLIB$$c201eac9.invoke() at com.paic.mhis.siapp.core.rps.protocol.Receiver.invoke(Receiver.java:32) at com.paic.mhis.siapp.core.rps.transport.server.RpsHttpServer.handleRequest(RpsHttpServer.java:19) at com.paic.mhis.siapp.core.rps.transport.server.RpsHttpServlet.doPost(RpsHttpServlet.java:126) at com.paic.mhis.siapp.core.rps.transport.server.RpsHttpServlet.doPost(RpsHttpServlet.java:90) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3594) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121) at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2202) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2108) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1432) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201) at weblogic.work.ExecuteThread.run(ExecuteThread.java:173) Caused by: org.springframework.jdbc.BadSqlGrammarException: SqlMapClient operation; bad SQL grammar []; nested exception is com.ibatis.common.jdbc.exception.NestedSQLException: --- The error occurred in sqlmaps/market/sqlmap-mapping-couponManage.xml. --- The error occurred while applying a parameter map. --- Check the couponManage.getCouponNoSeq-InlineParameterMap. --- Check the statement (query failed). --- Cause: java.sql.SQLSyntaxErrorException: ORA-02289: 序列不存在 at org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:98) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80) at org.springframework.orm.ibatis.SqlMapClientTemplate.execute(SqlMapClientTemplate.java:203) at org.springframework.orm.ibatis.SqlMapClientTemplate.queryForObject(SqlMapClientTemplate.java:279) at com.paic.pafa.biz.dao.BaseDAO._getObject(Unknown Source) at com.paic.pafa.biz.dao.BaseDAO._queryForObject(Unknown Source) at com.paic.mhis.siapp.common.integration.dao.impl.CommonDaoImpl.get(CommonDaoImpl.java:121) at com.paic.mhis.oaccount.market.service.impl.CouponManageServiceImpl.getCouponNo(CouponManageServiceImpl.java:89) ... 31 more Caused by: com.ibatis.common.jdbc.exception.NestedSQLException: --- The error occurred in sqlmaps/market/sqlmap-mapping-couponManage.xml. --- The error occurred while applying a parameter map. --- Check the couponManage.getCouponNoSeq-InlineParameterMap. --- Check the statement (query failed). --- Cause: java.sql.SQLSyntaxErrorException: ORA-02289: 序列不存在 at com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryWithCallback(GeneralStatement.java:185) at com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryForObject(GeneralStatement.java:104) at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForObject(SqlMapExecutorDelegate.java:566) at com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForObject(SqlMapSessionImpl.java:114) at org.springframework.orm.ibatis.SqlMapClientTemplate$2.doInSqlMapClient(SqlMapClientTemplate.java:281) at org.springframework.orm.ibatis.SqlMapClientTemplate.execute(SqlMapClientTemplate.java:200) ... 36 more Caused by: java.sql.SQLSyntaxErrorException: ORA-02289: 序列不存在 at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:91) at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:133) at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:206) at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:455) at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:413) at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:1035) at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:194) at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:791) at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:866) at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1187) at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3386) at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:3487) at oracle.jdbc.driver.OraclePreparedStatementWrapper.execute(OraclePreparedStatementWrapper.java:1374) at weblogic.jdbc.wrapper.PreparedStatement.execute(PreparedStatement.java:98) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.ibatis.common.jdbc.logging.PreparedStatementLogProxy.invoke(PreparedStatementLogProxy.java:62) at $Proxy223.execute(Unknown Source) at com.ibatis.sqlmap.engine.execution.SqlExecutor.executeQuery(SqlExecutor.java:186) at com.paic.pafa.app.lwc.service.persistence.dao.ibatis.PafaSqlExecutor.doSuperExecuteQuery(Unknown Source) at com.paic.pafa.app.lwc.service.persistence.dao.ibatis.PafaSqlExecutor.executeQuery(Unknown Source) at com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.sqlExecuteQuery(GeneralStatement.java:205) at com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryWithCallback(GeneralStatement.java:173) ... 41 more [03/30 10:53:27] [WARN] RpsHttpServlet: rollback <[ServletContext@9937403[app:siapp-sms-app module:siapp-sms-app path:/siapp-sms-app spec-version:2.5]] Servlet failed with Exception java.lang.NullPointerException at com.paic.mhis.siapp.core.rps.transport.server.RpsHttpServlet.doPost(RpsHttpServlet.java:94) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) Truncated. see log file for complete stacktrace
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