我有一个字符串，即AB1234。我正在尝试创建一个方法，我可以将字符串传递到总是在整数前面填充零，以创建一个10位数的字符串。
一些例子：
padZero("AB1234")返回＆＃34; AB00001234＆＃34;
padZero("CD001234")返回＆＃34; CD00001234＆＃34;
padZero("ABCDEF858")返回＆＃34; ABCDEF0858＆＃34;
有没有一种简单的方法可以做到这一点，而不必有大量的角落情况，你必须尝试抓住？假设在方法调用之前捕获了传递给此方法的大于十位的字符串的情况。
答案 0 :(得分：2)
public static void main(String[] args) {
System.out.println(padZero("abc123"));
}
public static String padZero(String init) {
Matcher matcher = Pattern.compile("\\d+").matcher(init);
matcher.find();
return String.format("%s%0" + (10-matcher.start()) + "d", init.substring(0, matcher.start()), Integer.valueOf(matcher.group()));
}
答案 1 :(得分：1)
我认为最简单的方法是找到第一个数字然后插入足够的零以填充到10位数字：
null
java.lang.StackOverflowError
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at java.lang.ClassLoader.defineClass(ClassLoader.java:642)
at com.intellij.util.lang.UrlClassLoader._defineClass(UrlClassLoader.java:272)
at com.intellij.util.lang.UrlClassLoader.defineClass(UrlClassLoader.java:268)
at com.intellij.util.lang.UrlClassLoader.findClass(UrlClassLoader.java:222)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at com.intellij.openapi.editor.impl.DocumentImpl.getText(DocumentImpl.java:806)
at com.intellij.notification.EventLog.getStatusText(EventLog.java:279)
at com.intellij.notification.EventLog.formatForLog(EventLog.java:178)
at com.intellij.notification.LogModel.addNotification(LogModel.java:57)
at com.intellij.notification.EventLog$ProjectTracker.printNotification(EventLog.java:507)
at com.intellij.notification.EventLog$ProjectTracker.access$100(EventLog.java:462)
at com.intellij.notification.EventLog$ProjectTracker$1.notify(EventLog.java:479)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.util.messages.impl.MessageBusConnectionImpl.deliverMessage(MessageBusConnectionImpl.java:117)
at com.intellij.util.messages.impl.MessageBusImpl.doPumpMessages(MessageBusImpl.java:377)
at com.intellij.util.messages.impl.MessageBusImpl.pumpMessages(MessageBusImpl.java:364)
at com.intellij.util.messages.impl.MessageBusImpl.pumpMessages(MessageBusImpl.java:350)
at com.intellij.util.messages.impl.MessageBusImpl.sendMessage(MessageBusImpl.java:343)
at com.intellij.util.messages.impl.MessageBusImpl.access$200(MessageBusImpl.java:42)
at com.intellij.util.messages.impl.MessageBusImpl$2.invoke(MessageBusImpl.java:226)
at com.sun.proxy.$Proxy62.notify(Unknown Source)
at com.intellij.notification.Notifications$Bus.doNotify(Notifications.java:75)
at com.intellij.notification.Notifications$Bus.lambda$notify$1(Notifications.java:69)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2432)
at com.intellij.notification.Notifications$Bus.notify(Notifications.java:69)
at com.intellij.notification.Notification.notify(Notification.java:296)
at com.android.tools.idea.gradle.project.sync.GradleSyncState.addToEventLog(GradleSyncState.java:246)
at com.android.tools.idea.gradle.project.sync.GradleSyncState.addInfoToEventLog(GradleSyncState.java:242)
at com.android.tools.idea.gradle.project.sync.GradleSyncState.syncStarted(GradleSyncState.java:160)
at com.android.tools.idea.gradle.project.sync.GradleSyncState.syncStarted(GradleSyncState.java:146)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.handlePreSyncCheckFailure(GradleSyncInvoker.java:207)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.sync(GradleSyncInvoker.java:179)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.lambda$requestProjectSync$1(GradleSyncInvoker.java:106)
at com.intellij.ui.AppUIUtil.invokeLaterIfProjectAlive(AppUIUtil.java:97)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSync(GradleSyncInvoker.java:115)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSyncAndSourceGeneration(GradleSyncInvoker.java:90)
at com.android.tools.idea.gradle.sdk.GradleAndroidSdkEventListener.afterSdkPathChange(GradleAndroidSdkEventListener.java:71)
at com.android.tools.idea.sdk.IdeSdks.afterAndroidSdkPathUpdate(IdeSdks.java:316)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:296)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:224)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$null$0(SdkSync.java:213)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:898)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$setIdeSdk$1(SdkSync.java:212)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2432)
at com.android.tools.idea.gradle.project.sync.SdkSync.setIdeSdk(SdkSync.java:212)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdk(SdkSync.java:126)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdks(SdkSync.java:71)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidSdkPreSyncCheck.doCheckCanSync(AndroidSdkPreSyncCheck.java:42)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidStudioSyncCheck.canSync(AndroidStudioSyncCheck.java:30)
at com.android.tools.idea.gradle.project.sync.precheck.PreSyncChecks.canSync(PreSyncChecks.java:48)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.sync(GradleSyncInvoker.java:175)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.lambda$requestProjectSync$1(GradleSyncInvoker.java:106)
at com.intellij.ui.AppUIUtil.invokeLaterIfProjectAlive(AppUIUtil.java:97)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSync(GradleSyncInvoker.java:115)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSyncAndSourceGeneration(GradleSyncInvoker.java:90)
at com.android.tools.idea.gradle.sdk.GradleAndroidSdkEventListener.afterSdkPathChange(GradleAndroidSdkEventListener.java:71)
at com.android.tools.idea.sdk.IdeSdks.afterAndroidSdkPathUpdate(IdeSdks.java:316)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:296)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:224)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$null$0(SdkSync.java:213)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:898)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$setIdeSdk$1(SdkSync.java:212)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2432)
at com.android.tools.idea.gradle.project.sync.SdkSync.setIdeSdk(SdkSync.java:212)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdk(SdkSync.java:126)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdks(SdkSync.java:71)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidSdkPreSyncCheck.doCheckCanSync(AndroidSdkPreSyncCheck.java:42)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidStudioSyncCheck.canSync(AndroidStudioSyncCheck.java:30)
at com.android.tools.idea.gradle.project.sync.precheck.PreSyncChecks.canSync(PreSyncChecks.java:48)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.sync(GradleSyncInvoker.java:175)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.lambda$requestProjectSync$1(GradleSyncInvoker.java:106)
at com.intellij.ui.AppUIUtil.invokeLaterIfProjectAlive(AppUIUtil.java:97)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSync(GradleSyncInvoker.java:115)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSyncAndSourceGeneration(GradleSyncInvoker.java:90)
at com.android.tools.idea.gradle.sdk.GradleAndroidSdkEventListener.afterSdkPathChange(GradleAndroidSdkEventListener.java:71)
at com.android.tools.idea.sdk.IdeSdks.afterAndroidSdkPathUpdate(IdeSdks.java:316)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:296)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:224)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$null$0(SdkSync.java:213)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:898)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$setIdeSdk$1(SdkSync.java:212)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2432)
at com.android.tools.idea.gradle.project.sync.SdkSync.setIdeSdk(SdkSync.java:212)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdk(SdkSync.java:126)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdks(SdkSync.java:71)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidSdkPreSyncCheck.doCheckCanSync(AndroidSdkPreSyncCheck.java:42)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidStudioSyncCheck.canSync(AndroidStudioSyncCheck.java:30)
at com.android.tools.idea.gradle.project.sync.precheck.PreSyncChecks.canSync(PreSyncChecks.java:48)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.sync(GradleSyncInvoker.java:175)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.lambda$requestProjectSync$1(GradleSyncInvoker.java:106)
at com.intellij.ui.AppUIUtil.invokeLaterIfProjectAlive(AppUIUtil.java:97)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSync(GradleSyncInvoker.java:115)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSyncAndSourceGeneration(GradleSyncInvoker.java:90)
at com.android.tools.idea.gradle.sdk.GradleAndroidSdkEventListener.afterSdkPathChange(GradleAndroidSdkEventListener.java:71)
at com.android.tools.idea.sdk.IdeSdks.afterAndroidSdkPathUpdate(IdeSdks.java:316)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:296)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:224)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$null$0(SdkSync.java:213)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:898)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$setIdeSdk$1(SdkSync.java:212)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2432)
at com.android.tools.idea.gradle.project.sync.SdkSync.setIdeSdk(SdkSync.java:212)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdk(SdkSync.java:126)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdks(SdkSync.java:71)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidSdkPreSyncCheck.doCheckCanSync(AndroidSdkPreSyncCheck.java:42)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidStudioSyncCheck.canSync(AndroidStudioSyncCheck.java:30)
at com.android.tools.idea.gradle.project.sync.precheck.PreSyncChecks.canSync(PreSyncChecks.java:48)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.sync(GradleSyncInvoker.java:175)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.lambda$requestProjectSync$1(GradleSyncInvoker.java:106)
at com.intellij.ui.AppUIUtil.invokeLaterIfProjectAlive(AppUIUtil.java:97)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSync(GradleSyncInvoker.java:115)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSyncAndSourceGeneration(GradleSyncInvoker.java:90)
at com.android.tools.idea.gradle.sdk.GradleAndroidSdkEventListener.afterSdkPathChange(GradleAndroidSdkEventListener.java:71)
at com.android.tools.idea.sdk.IdeSdks.afterAndroidSdkPathUpdate(IdeSdks.java:316)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:296)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:224)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$null$0(SdkSync.java:213)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:898)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$setIdeSdk$1(SdkSync.java:212)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2432)
at com.android.tools.idea.gradle.project.sync.SdkSync.setIdeSdk(SdkSync.java:212)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdk(SdkSync.java:126)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdks(SdkSync.java:71)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidSdkPreSyncCheck.doCheckCanSync(AndroidSdkPreSyncCheck.java:42)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidStudioSyncCheck.canSync(AndroidStudioSyncCheck.java:30)
at com.android.tools.idea.gradle.project.sync.precheck.PreSyncChecks.canSync(PreSyncChecks.java:48)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.sync(GradleSyncInvoker.java:175)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.lambda$requestProjectSync$1(GradleSyncInvoker.java:106)
at com.intellij.ui.AppUIUtil.invokeLaterIfProjectAlive(AppUIUtil.java:97)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSync(GradleSyncInvoker.java:115)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSyncAndSourceGeneration(GradleSyncInvoker.java:90)
at com.android.tools.idea.gradle.sdk.GradleAndroidSdkEventListener.afterSdkPathChange(GradleAndroidSdkEventListener.java:71)
at com.android.tools.idea.sdk.IdeSdks.afterAndroidSdkPathUpdate(IdeSdks.java:316)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:296)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:224)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$null$0(SdkSync.java:213)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:898)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$setIdeSdk$1(SdkSync.java:212)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2432)
at com.android.tools.idea.gradle.project.sync.SdkSync.setIdeSdk(SdkSync.java:212)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdk(SdkSync.java:126)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdks(SdkSync.java:71)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidSdkPreSyncCheck.doCheckCanSync(AndroidSdkPreSyncCheck.java:42)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidStudioSyncCheck.canSync(AndroidStudioSyncCheck.java:30)
at com.android.tools.idea.gradle.project.sync.precheck.PreSyncChecks.canSync(PreSyncChecks.java:48)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.sync(GradleSyncInvoker.java:175)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.lambda$requestProjectSync$1(GradleSyncInvoker.java:106)
at com.intellij.ui.AppUIUtil.invokeLaterIfProjectAlive(AppUIUtil.java:97)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSync(GradleSyncInvoker.java:115)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSyncAndSourceGeneration(GradleSyncInvoker.java:90)
at com.android.tools.idea.gradle.sdk.GradleAndroidSdkEventListener.afterSdkPathChange(GradleAndroidSdkEventListener.java:71)
at com.android.tools.idea.sdk.IdeSdks.afterAndroidSdkPathUpdate(IdeSdks.java:316)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:296)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:224)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$null$0(SdkSync.java:213)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:898)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$setIdeSdk$1(SdkSync.java:212)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2432)
at com.android.tools.idea.gradle.project.sync.SdkSync.setIdeSdk(SdkSync.java:212)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdk(SdkSync.java:126)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdks(SdkSync.java:71)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidSdkPreSyncCheck.doCheckCanSync(AndroidSdkPreSyncCheck.java:42)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidStudioSyncCheck.canSync(AndroidStudioSyncCheck.java:30)
at com.android.tools.idea.gradle.project.sync.precheck.PreSyncChecks.canSync(PreSyncChecks.java:48)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.sync(GradleSyncInvoker.java:175)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.lambda$requestProjectSync$1(GradleSyncInvoker.java:106)
at com.intellij.ui.AppUIUtil.invokeLaterIfProjectAlive(AppUIUtil.java:97)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSync(GradleSyncInvoker.java:115)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSyncAndSourceGeneration(GradleSyncInvoker.java:90)
at com.android.tools.idea.gradle.sdk.GradleAndroidSdkEventListener.afterSdkPathChange(GradleAndroidSdkEventListener.java:71)
at com.android.tools.idea.sdk.IdeSdks.afterAndroidSdkPathUpdate(IdeSdks.java:316)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:296)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:224)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$null$0(SdkSync.java:213)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:898)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$setIdeSdk$1(SdkSync.java:212)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2432)
at com.android.tools.idea.gradle.project.sync.SdkSync.setIdeSdk(SdkSync.java:212)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdk(SdkSync.java:126)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdks(SdkSync.java:71)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidSdkPreSyncCheck.doCheckCanSync(AndroidSdkPreSyncCheck.java:42)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidStudioSyncCheck.canSync(AndroidStudioSyncCheck.java:30)
at com.android.tools.idea.gradle.project.sync.precheck.PreSyncChecks.canSync(PreSyncChecks.java:48)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.sync(GradleSyncInvoker.java:175)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.lambda$requestProjectSync$1(GradleSyncInvoker.java:106)
at com.intellij.ui.AppUIUtil.invokeLaterIfProjectAlive(AppUIUtil.java:97)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSync(GradleSyncInvoker.java:115)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSyncAndSourceGeneration(GradleSyncInvoker.java:90)
at com.android.tools.idea.gradle.sdk.GradleAndroidSdkEventListener.afterSdkPathChange(GradleAndroidSdkEventListener.java:71)
at com.android.tools.idea.sdk.IdeSdks.afterAndroidSdkPathUpdate(IdeSdks.java:316)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:296)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:224)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$null$0(SdkSync.java:213)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:898)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$setIdeSdk$1(SdkSync.java:212)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2432)
at com.android.tools.idea.gradle.project.sync.SdkSync.setIdeSdk(SdkSync.java:212)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdk(SdkSync.java:126)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdks(SdkSync.java:71)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidSdkPreSyncCheck.doCheckCanSync(AndroidSdkPreSyncCheck.java:42)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidStudioSyncCheck.canSync(AndroidStudioSyncCheck.java:30)
at com.android.tools.idea.gradle.project.sync.precheck.PreSyncChecks.canSync(PreSyncChecks.java:48)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.sync(GradleSyncInvoker.java:175)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.lambda$requestProjectSync$1(GradleSyncInvoker.java:106)
at com.intellij.ui.AppUIUtil.invokeLaterIfProjectAlive(AppUIUtil.java:97)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSync(GradleSyncInvoker.java:115)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSyncAndSourceGeneration(GradleSyncInvoker.java:90)
at com.android.tools.idea.gradle.sdk.GradleAndroidSdkEventListener.afterSdkPathChange(GradleAndroidSdkEventListener.java:71)
at com.android.tools.idea.sdk.IdeSdks.afterAndroidSdkPathUpdate(IdeSdks.java:316)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:296)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:224)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$null$0(SdkSync.java:213)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:898)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$setIdeSdk$1(SdkSync.java:212)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2432)
at com.android.tools.idea.gradle.project.sync.SdkSync.setIdeSdk(SdkSync.java:212)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdk(SdkSync.java:126)
at com.android.tools.idea.gradle.project.sync.SdkSync.syncIdeAndProjectAndroidSdks(SdkSync.java:71)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidSdkPreSyncCheck.doCheckCanSync(AndroidSdkPreSyncCheck.java:42)
at com.android.tools.idea.gradle.project.sync.precheck.AndroidStudioSyncCheck.canSync(AndroidStudioSyncCheck.java:30)
at com.android.tools.idea.gradle.project.sync.precheck.PreSyncChecks.canSync(PreSyncChecks.java:48)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.sync(GradleSyncInvoker.java:175)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.lambda$requestProjectSync$1(GradleSyncInvoker.java:106)
at com.intellij.ui.AppUIUtil.invokeLaterIfProjectAlive(AppUIUtil.java:97)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSync(GradleSyncInvoker.java:115)
at com.android.tools.idea.gradle.project.sync.GradleSyncInvoker.requestProjectSyncAndSourceGeneration(GradleSyncInvoker.java:90)
at com.android.tools.idea.gradle.sdk.GradleAndroidSdkEventListener.afterSdkPathChange(GradleAndroidSdkEventListener.java:71)
at com.android.tools.idea.sdk.IdeSdks.afterAndroidSdkPathUpdate(IdeSdks.java:316)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:296)
at com.android.tools.idea.sdk.IdeSdks.setAndroidSdkPath(IdeSdks.java:224)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$null$0(SdkSync.java:213)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:898)
at com.android.tools.idea.gradle.project.sync.SdkSync.lambda$setIdeSdk$1(SdkSync.java:212)
at com.intellij.util.ui.UIUtil.invokeLaterIfNeeded(UIUtil.java:2432)
at com.android.tools.idea.gradle.project.sync.SdkSync.setIdeSdk(SdkSync.java:212)
答案 2 :(得分：1)
以防您不想做出假设，而是在无效输入字符串上快速失败：
private static final Pattern STRING_FORMAT = Pattern.compile("(\\D+)(\\d+)");
public static final String padZeros(String s) {
Matcher matcher = STRING_FORMAT.matcher(s);
if (!matcher.matches() || s.length() > 10)
throw new IllegalArgumentException("Invalid format");
char[] result = new char[10];
Arrays.fill(result, '0');
String nonDigits = matcher.group(1);
String digits = matcher.group(2);
nonDigits.getChars(0, nonDigits.length(), result, 0);
digits.getChars(0, digits.length(), result, 10 - digits.length());
return String.valueOf(result);
}