# Remove Lambda Expression Braces

# Description

If the body of the lambda statement contains only a single expression, the braces are optional. It can be reduced to a lambda expression.

This is comparable to if-statements or loops with a single expression inside their body, where braces are also optional.

# Benefits

This rule provides an easier-to read alternative to filter items in a list.

# Tags

# Code Changes


public Function<Function, Function> f = (Function function) -> {
    return function.compose(function);


public Function<Function, Function> f = (Function function) -> function.compose(function);

Use a Java Refactoring Tool

No license required

You can review this refactoring on your code without a license by installing jSparrow to your Eclipse IDE. Install the plug-in from Eclipse IDE: Eclipse Marketplace.

System-wide Refactoring

Do you want to automate this refactoring (and many more) to your system-wide code? The automatic application of this system-wide refactoring can be unlocked by acquiring your jSparrow license.

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# Properties

Property Value
Rule ID StatementLambdaToExpression
First seen in jSparrow version 2.0.0
Minimum Java version 8
Remediation cost 5 min