IntelliJ IDEA

generieren

Umfassende IntelliJ IDEA Shortcuts und Workflows für Java, Kotlin und mehrsprachige Entwicklung.

Allgemeine Shortcuts

| | Windows/Linux | macOS | Description | | | --- | --- | --- | | | Ctrl+Shift+A | Cmd+Shift+A | Find Action | | | | Double Shift | Double Shift | Search Everywhere | | | | Ctrl+N | Cmd+O | Go to Class | | | | Ctrl+Shift+N | Cmd+Shift+O | Go to File | | | | Ctrl+Alt+Shift+N | Cmd+Option+O | Go to Symbol | | | | Ctrl+E | Cmd+E | Recent Files | | | | Ctrl+Shift+E | Cmd+Shift+E | Recent Locations | | | | Alt+F1 | Option+F1 | Select In | | | | Ctrl+G | Cmd+L | Go to Line | | | | Ctrl+Tab | Ctrl+Tab | Switcher | |

| | Windows/Linux | macOS | Description | | | --- | --- | --- | | | Ctrl+B | Cmd+B | Go to Declaration | | | | Ctrl+Alt+B | Cmd+Option+B | Go to Implementation | | | | Ctrl+Shift+B | Cmd+Shift+B | Go to Type Declaration | | | | Ctrl+U | Cmd+U | Go to Super Method | | | | Alt+F7 | Option+F7 | Find Usages | | | | Ctrl+F7 | Cmd+F7 | Find Usages in File | | | | Ctrl+Shift+F7 | Cmd+Shift+F7 | Highlight Usages | | | | Ctrl+Alt+F7 | Cmd+Option+F7 | Show Usages | | | | Ctrl+H | Cmd+H | Type Hierarchy | | | | Ctrl+Shift+H | Cmd+Shift+H | Method Hierarchy | | | | Ctrl+Alt+H | Ctrl+Option+H | Call Hierarchy | |

Bearbeitung

| | Windows/Linux | macOS | Description | | | --- | --- | --- | | | Ctrl+Space | Ctrl+Space | Basic Code Completion | | | | Ctrl+Shift+Space | Ctrl+Shift+Space | Smart Code Completion | | | | Ctrl+Alt+Space | Ctrl+Option+Space | Class Name Completion | | | | Ctrl+Shift+Enter | Cmd+Shift+Enter | Complete Current Statement | | | | Ctrl+P | Cmd+P | Parameter Info | | | | Ctrl+Q | Ctrl+J | Quick Documentation | | | | Shift+F1 | Shift+F1 | External Documentation | | | | Ctrl+F1 | Cmd+F1 | Show Error Description | | | | Alt+Insert | Cmd+N | Generate | | | | Ctrl+O | Ctrl+O | Override Methods | | | | Ctrl+I | Ctrl+I | Implement Methods | |

Code Formatierung

| | Windows/Linux | macOS | Description | | | --- | --- | --- | | | Ctrl+Alt+L | Cmd+Option+L | Reformat Code | | | | Ctrl+Alt+O | Ctrl+Option+O | Optimize Imports | | | | Ctrl+Alt+I | Ctrl+Option+I | Auto-Indent Lines | | | | Tab | Tab | Indent Selection | | | | Shift+Tab | Shift+Tab | Unindent Selection | | | | Ctrl+X | Cmd+X | Cut Current Line | | | | Ctrl+C | Cmd+C | Copy Current Line | | | | Ctrl+D | Cmd+D | Duplicate Line | | | | Ctrl+Y | Cmd+Backspace | Delete Line | | | | Ctrl+Shift+J | Ctrl+Shift+J | Join Lines | |

Herstellung

| | Windows/Linux | macOS | Description | | | --- | --- | --- | | | F6 | F6 | Move | | | | Shift+F6 | Shift+F6 | Rename | | | | Ctrl+F6 | Cmd+F6 | Change Signature | | | | Ctrl+Alt+N | Cmd+Option+N | Inline | | | | Ctrl+Alt+M | Cmd+Option+M | Extract Method | | | | Ctrl+Alt+V | Cmd+Option+V | Extract Variable | | | | Ctrl+Alt+F | Cmd+Option+F | Extract Field | | | | Ctrl+Alt+C | Cmd+Option+C | Extract Constant | | | | Ctrl+Alt+P | Cmd+Option+P | Extract Parameter | | | | Ctrl+Shift+F6 | Cmd+Shift+F6 | Type Migration | |

Suchen und Ersetzen

| | Windows/Linux | macOS | Description | | | --- | --- | --- | | | Ctrl+F | Cmd+F | Find | | | | F3 | Cmd+G | Find Next | | | | Shift+F3 | Cmd+Shift+G | Find Previous | | | | Ctrl+R | Cmd+R | Replace | | | | Ctrl+Shift+F | Cmd+Shift+F | Find in Path | | | | Ctrl+Shift+R | Cmd+Shift+R | Replace in Path | | | | Ctrl+F3 | Cmd+F3 | Find Word at Caret | | | | F4 | F4 | Find Next Occurrence | | | | Shift+F4 | Shift+F4 | Find Previous Occurrence | |

Laufen und Debuggen

| | Windows/Linux | macOS | Description | | | --- | --- | --- | | | Shift+F10 | Ctrl+R | Run | | | | Shift+F9 | Ctrl+D | Debug | | | | Ctrl+Shift+F10 | Ctrl+Shift+R | Run Context Configuration | | | | Ctrl+Shift+F9 | Ctrl+Shift+D | Debug Context Configuration | | | | F8 | F8 | Step Over | | | | F7 | F7 | Step Into | | | | Shift+F7 | Shift+F7 | Smart Step Into | | | | Shift+F8 | Shift+F8 | Step Out | | | | Alt+F9 | Option+F9 | Run to Cursor | | | | Alt+F8 | Option+F8 | Evaluate Expression | | | | F9 | Cmd+Option+R | Resume Program | | | | Ctrl+F8 | Cmd+F8 | Toggle Breakpoint | |

Versionskontrolle

| | Windows/Linux | macOS | Description | | | --- | --- | --- | | | Ctrl+K | Cmd+K | Commit | | | | Ctrl+Shift+K | Cmd+Shift+K | Push | | | | Ctrl+T | Cmd+T | Update Project | | | | Alt+Shift+C | Option+Shift+C | View Recent Changes | | | | Alt+9 | Cmd+9 | Version Control Tool Window | | | | Ctrl+Alt+Z | Cmd+Option+Z | Rollback | | | | Ctrl+Alt+A | Cmd+Option+A | Add to VCS | |

Live-Vorlagen

Häufige Java-Vorlagen

| | Template | Expansion | | | --- | --- | | | psvm | public static void main(String[] args) | | | | sout | System.out.println() | | | | souf | System.out.printf() | | | | soutm | System.out.println("methodName") | | | | soutp | System.out.println("parameterName = " + parameterName) | | | | soutv | System.out.println("variableName = " + variableName) | | | | fori | for (int i = 0; i < ; i++) | | | | iter | for (Type item : collection) | | | | itar | for (int i = 0; i < array.length; i++) | | | | ritar | for (int i = array.length - 1; i >= 0; i--) | |

Gemeinsame Kotlin Vorlagen

| | Template | Expansion | | | --- | --- | | | fun | fun functionName() \\{\\} | | | | main | fun main(args: Array<String>) \\{\\} | | | | println | println() | | | | fori | for (i in 0 until ) | | | | fore | for (item in collection) | | | | ifn | if (value != null) | | | | inn | if (value == null) | |

Produktivitätsmerkmale

Code Generation

```java // Generate constructor Alt+Insert → Constructor

// Generate getters/setters Alt+Insert → Getter and Setter

// Generate toString() Alt+Insert → toString()

// Generate equals() and hashCode() Alt+Insert → equals() and hashCode()

// Generate test methods Alt+Insert → Test ```_

Postfix Fertigstellung

java // Examples of postfix completion list.for → for (String item : list) condition.if → if (condition) obj.null → if (obj == null) obj.nn → if (obj != null) obj.var → Type obj = obj.return → return obj;_

Absichten und Schnellkorrekturen

java // Common intentions (Alt+Enter) - Convert to lambda - Add type annotation - Create method from usage - Implement interface - Add import statement - Surround with try-catch_

Projektleitung

Datei- und Projektoperationen

| | Windows/Linux | macOS | Description | | | --- | --- | --- | | | Ctrl+Alt+Shift+S | Cmd+; | Project Structure | | | | Ctrl+Alt+S | Cmd+, | Settings | | | | Ctrl+Shift+A | Cmd+Shift+A | Find Action | | | | Ctrl+Shift+F12 | Cmd+Shift+F12 | Toggle Maximized Editor | | | | Alt+1 | Cmd+1 | Project Tool Window | | | | Alt+7 | Cmd+7 | Structure Tool Window | | | | Alt+9 | Cmd+9 | Version Control Tool Window | | | | Alt+F12 | Option+F12 | Terminal | |

Bauen und laufen

```bash

Maven projects

mvn clean compile mvn test mvn package mvn install

Gradle projects

./gradlew build ./gradlew test ./gradlew run ./gradlew clean

SBT projects (Scala)

sbt compile sbt test sbt run ```_

Best Practices

Code Qualität

Verwenden Sie Codeinspektionen und Analysetools
Befolgen Sie Kodierungsstandards und Konventionen
Vollständige Gerätetests schreiben
Verwenden Sie sinnvolle Variablen und Methodennamen
Methoden klein und fokussiert halten

Leistungsoptimierung

geeignete Datenstrukturen verwenden
Vermeiden Sie vorzeitige Optimierung
Profilcode, um Engpässe zu identifizieren
Lazy Initialisierung verwenden, wenn nötig
Objekt-Erstellung in Schleifen minimieren

Debugging Strategien

Verwenden von bedingten Breakpoints
Ausdrücke beim Debugging auswerten
Verwenden Sie Protokollierung für Produktions Debugging
Schritt für Code systematisch
Überprüfen Sie variable Zustände und Anrufstapel

Plugin Empfehlungen

SonarLint: Analyse der Codequalität
CheckStyle: Code-Style-Überprüfung
*FindBugs: Fehlermustererkennung
Lombok*: Kesselplattencode reduzieren
*Datenbank-Tools: Datenbankintegration
Docker: Container-Unterstützung
Kubernetes: Orchesterunterstützung