A boolean is a data type that can only have one of two values: true or false A boolean can be compared with other booleans to create a boolean expression that overall can be true or false Booleans can ...

> 原文:[https://www . geesforgeks . org/Java-guava-booleans-concat-method-with-examples/](https://www.geeksforgeeks.org/java-guava-booleans-concat-method-with ...

I have a bit of Java code where I need to check if an object is null. If the object is null, set a flag in a boolean primitive for use later, and if not, do something to the object. Is it faster for ...