vscode编写JAVA代码_VSCode 搭建 Java 开发环境

工欲善其事，必先利其器 -《论语·卫灵公》

最近在看《代码整洁之道》一书，其示例代码均为 Java 语言所写。虽说编程语言有很多相通的，但作为一名没有写过 Java 的前端，看完大半后发现很难再继续读下去，其中一些思想还是不能理解。加上后面打算再看下《算法》红宝书，正因此，激发了我对 Java 这门语言的兴趣，打算花点时间来入门下 Java 的基础。试了用 Eclipse 和 Intellij 编辑器来写了些练习，发现还是 VSCode 操作顺手。或许有人说 Intellij 很强大，可对于我来说 VSCode 免费、轻量级，优势还是挺明显的，最终也还是选了 VSCode。 写了几天遇到些问题，记录下吧。

扩展安装

如果你是为了简单编写和调试 Java 代码，直接安装下面两个扩展就可以直接跑 Java 程序了。

若你不满足于此，可以直接安装 Java 全家桶扩展，一扩展搞定所有。

遇到的问题

1. 怎么更改启动调试快捷键？(由于我使用的 Mac 键盘，每次调试都要同时按 fn + F5 着实影响调试心情)

打开 VSCode 快捷键修改设置，路径 Code=>Preferences=>KeyBoard Shortcuts, 在设置的搜索框输入“Run”，找到相应的选项，点击编辑按钮，弹出快捷键录入框，按下你希望设置的组合键就好了

2. 想忽略掉一些没意义的警告？(做练习时有些变量或方法暂时不用时，编辑器会出现黄色波浪线提醒，且输出警告信息)

在项目根目录新建 .settings 文件夹(新建完如果在 VSCode 目录里看不到，则看问题3 )，并在此文件夹下新建 org.eclipse.jdt.core.prefs 文件，此文件里面可以加入以下内容：

org.eclipse.jdt.core.prefs

eclipse.preferences.version=1

org.eclipse.jdt.core.compiler.annotation.inheritNullAnnotations=disabled

org.eclipse.jdt.core.compiler.annotation.missingNonNullByDefaultAnnotation=ignore

org.eclipse.jdt.core.compiler.annotation.nonnull=org.eclipse.jdt.annotation.NonNull

org.eclipse.jdt.core.compiler.annotation.nonnull.secondary=

org.eclipse.jdt.core.compiler.annotation.nonnullbydefault=org.eclipse.jdt.annotation.NonNullByDefault

org.eclipse.jdt.core.compiler.annotation.nonnullbydefault.secondary=

org.eclipse.jdt.core.compiler.annotation.nullable=org.eclipse.jdt.annotation.Nullable

org.eclipse.jdt.core.compiler.annotation.nullable.secondary=

org.eclipse.jdt.core.compiler.annotation.nullanalysis=disabled

org.eclipse.jdt.core.compiler.problem.APILeak=warning

org.eclipse.jdt.core.compiler.problem.annotatedTypeArgumentToUnannotated=info

org.eclipse.jdt.core.compiler.problem.annotationSuperInterface=warning

org.eclipse.jdt.core.compiler.problem.autoboxing=ignore

org.eclipse.jdt.core.compiler.problem.comparingIdentical=warning

org.eclipse.jdt.core.compiler.problem.deadCode=warning

org.eclipse.jdt.core.compiler.problem.deprecation=warning

org.eclipse.jdt.core.compiler.problem.deprecationInDeprecatedCode=disabled

org.eclipse.jdt.core.compiler.problem.deprecationWhenOverridingDeprecatedMethod=disabled

org.eclipse.jdt.core.compiler.problem.discouragedReference=warning

org.eclipse.jdt.core.compiler.problem.emptyStatement=ignore

org.eclipse.jdt.core.compiler.problem.explicitlyClosedAutoCloseable=ignore

org.eclipse.jdt.core.compiler.problem.fallthroughCase=ignore

org.eclipse.jdt.core.compiler.problem.fatalOptionalError=disabled

org.eclipse.jdt.core.compiler.problem.fieldHiding=ignore

org.eclipse.jdt.core.compiler.problem.finalParameterBound=warning

org.eclipse.jdt.core.compiler.problem.finallyBlockNotCompletingNormally=warning

org.eclipse.jdt.core.compiler.problem.forbiddenReference=error

org.eclipse.jdt.core.compiler.problem.hiddenCatchBlock=warning

org.eclipse.jdt.core.compiler.problem.includeNullInfoFromAsserts=disabled

org.eclipse.jdt.core.compiler.problem.incompatibleNonInheritedInterfaceMethod=warning

org.eclipse.jdt.core.compiler.problem.incompleteEnumSwitch=warning

org.eclipse.jdt.core.compiler.problem.indirectStaticAccess=ignore

org.eclipse.jdt.core.compiler.problem.localVariableHiding=ignore

org.eclipse.jdt.core.compiler.problem.methodWithConstructorName=warning

org.eclipse.jdt.core.compiler.problem.missingDefaultCase=ignore

org.eclipse.jdt.core.compiler.problem.missingDeprecatedAnnotation=ignore

org.eclipse.jdt.core.compiler.problem.missingEnumCaseDespiteDefault=disabled

org.eclipse.jdt.core.compiler.problem.missingHashCodeMethod=ignore

org.eclipse.jdt.core.compiler.problem.missingOverrideAnnotation=ignore

org.eclipse.jdt.core.compiler.problem.missingOverrideAnnotationForInterfaceMethodImplementation=enabled

org.eclipse.jdt.core.compiler.problem.missingSerialVersion=warning

org.eclipse.jdt.core.compiler.problem.missingSynchronizedOnInheritedMethod=ignore

org.eclipse.jdt.core.compiler.problem.noEffectAssignment=warning

org.eclipse.jdt.core.compiler.problem.noImplicitStringConversion=warning

org.eclipse.jdt.core.compiler.problem.nonExternalizedStringLiteral=ignore

org.eclipse.jdt.core.compiler.problem.nonnullParameterAnnotationDropped=warning

org.eclipse.jdt.core.compiler.problem.nonnullTypeVariableFromLegacyInvocation=warning

org.eclipse.jdt.core.compiler.problem.nullAnnotationInferenceConflict=error

org.eclipse.jdt.core.compiler.problem.nullReference=warning

org.eclipse.jdt.core.compiler.problem.nullSpecViolation=error

org.eclipse.jdt.core.compiler.problem.nullUncheckedConversion=warning

org.eclipse.jdt.core.compiler.problem.overridingPackageDefaultMethod=warning

org.eclipse.jdt.core.compiler.problem.parameterAssignment=ignore

org.eclipse.jdt.core.compiler.problem.pessimisticNullAnalysisForFreeTypeVariables=warning

org.eclipse.jdt.core.compiler.problem.possibleAccidentalBooleanAssignment=ignore

org.eclipse.jdt.core.compiler.problem.potentialNullReference=ignore

org.eclipse.jdt.core.compiler.problem.potentiallyUnclosedCloseable=ignore

org.eclipse.jdt.core.compiler.problem.rawTypeReference=warning

org.eclipse.jdt.core.compiler.problem.redundantNullAnnotation=warning

org.eclipse.jdt.core.compiler.problem.redundantNullCheck=ignore

org.eclipse.jdt.core.compiler.problem.redundantSpecificationOfTypeArguments=ignore

org.eclipse.jdt.core.compiler.problem.redundantSuperinterface=ignore

org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic=ignore

org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic=ignore

org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled

org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=warning

org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=disabled

org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled

org.eclipse.jdt.core.compiler.problem.suppressWarningsNotFullyAnalysed=info

org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields=disabled

org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation=ignore

org.eclipse.jdt.core.compiler.problem.terminalDeprecation=warning

org.eclipse.jdt.core.compiler.problem.typeParameterHiding=warning

org.eclipse.jdt.core.compiler.problem.unavoidableGenericTypeProblems=enabled

org.eclipse.jdt.core.compiler.problem.uncheckedTypeOperation=warning

org.eclipse.jdt.core.compiler.problem.unclosedCloseable=warning

org.eclipse.jdt.core.compiler.problem.undocumentedEmptyBlock=ignore

org.eclipse.jdt.core.compiler.problem.unhandledWarningToken=warning

org.eclipse.jdt.core.compiler.problem.unlikelyCollectionMethodArgumentType=warning

org.eclipse.jdt.core.compiler.problem.unlikelyCollectionMethodArgumentTypeStrict=disabled

org.eclipse.jdt.core.compiler.problem.unlikelyEqualsArgumentType=info

org.eclipse.jdt.core.compiler.problem.unnecessaryElse=ignore

org.eclipse.jdt.core.compiler.problem.unnecessaryTypeCheck=ignore

org.eclipse.jdt.core.compiler.problem.unqualifiedFieldAccess=ignore

org.eclipse.jdt.core.compiler.problem.unstableAutoModuleName=warning

org.eclipse.jdt.core.compiler.problem.unusedDeclaredThrownException=ignore

org.eclipse.jdt.core.compiler.problem.unusedDeclaredThrownExceptionExemptExceptionAndThrowable=enabled

org.eclipse.jdt.core.compiler.problem.unusedDeclaredThrownExceptionIncludeDocCommentReference=enabled

org.eclipse.jdt.core.compiler.problem.unusedDeclaredThrownExceptionWhenOverriding=disabled

org.eclipse.jdt.core.compiler.problem.unusedExceptionParameter=ignore

org.eclipse.jdt.core.compiler.problem.unusedImport=ignore

org.eclipse.jdt.core.compiler.problem.unusedLabel=warning

org.eclipse.jdt.core.compiler.problem.unusedLocal=ignore

org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=ignore

org.eclipse.jdt.core.compiler.problem.unusedParameter=ignore

org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled

org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled

org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled

org.eclipse.jdt.core.compiler.problem.unusedPrivateMember=ignore

org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore

org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning

org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning

3. 新建 .settings 文件夹后看不到？

在 VSCode 设置里加入下面配置就好(Command + , 打开配置文件)

{

"files.exclude": {

"**/.settings": false,

},

}