contains メソッドは、JavaのStringクラスに属しており、指定された文字列（部分文字列）が元の文字列に含まれているかどうかをチェックするために使います。

One of the nasty little traps a Java developer can run into occurs when Collection.contains(Object) is not used with appropriate understanding. I demonstrate this potential trap in this post.

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Contribute to apachecn/geeksforgeeks-java-zh development by creating an account on GitHub.

When using Java’s Map implementations, it is sometimes common to invoke the Map ‘s get (Object) method and to react differently based on whether the value returned is null or not. A common ...

Florian Mueller has been killing it these past few months with his analysis of various tech patent suits on his FOSSpatents blog, and today he's unearthed a pretty major bombshell: at least 43 ...

The US government advised people to stop using Java last week Oracle issued an emergency update to its widely-used Java web software on Sunday, but experts say it still contains security flaws ...

Researchers from Security Explorations claim to have found two new vulnerabilities in Java 7 Update 11 that can be exploited to bypass the software's security sandbox and execute arbitrary code on ...

The US government advised people to stop using Java last week Oracle issued an emergency update to its widely-used Java web software on Sunday, but experts say it still contains security flaws ...

An academic paper [PDF] published in 2018 identified a code snippet Lundblad posted on the site as the most copied Java code taken from StackOverflow and then re-used in open source projects.