August 2026
Intermediate
538 pages
15h 38m
Portuguese (Portugal, Brazil)
book
Java em poucas palavras (Portuguese Edition), 9th Edition
by Benjamin J. Evans, Jason R. Clark, David Flanagan
Content preview from Java em poucas palavras (Portuguese Edition), 9th Edition
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Apêndice B. Ferramentasda plataforma
Este capítulo aborda as ferramentas que vêm junto com a versão OpenJDK da plataforma Java. Todas as ferramentas mencionadas são de linha de comando. Se você estiver usando uma versão diferente do Java, pode encontrar ferramentas diferentes (com funções semelhantes) como parte da sua distribuição. Muitos desenvolvedores terceirizados se baseiam nos fundamentos fornecidos por essas ferramentas do JDK.
Mais adiante neste capítulo, dedicamos uma seção às ferramentas do Java Flight Recorder (JFR) para análise detalhada de aplicativos Java.
Ferramentas de linha de comando
As ferramentas de linha de comando que abordamos são as mais usadas e as de maior utilidade — não se trata de uma descrição completa de todas as ferramentas disponíveis.
Observação
Em alguns casos, precisamos falar sobre opções que aceitam caminhos do sistema de arquivos. Assim como no resto do livro, usamos as convenções do Unix nesses casos. Outros aspectos dessas ferramentas, como as opções de linha de comando disponíveis, devem ser os mesmos em todos os sistemas operacionais.
Aqui, vamos falar sobre as seguintes ferramentas, incluindo seu uso básico, descrição e opções comuns:
-
javac -
java -
jar -
javadoc -
jdeps -
jps -
jstat -
jstatd -
jinfo -
jstack -
jmap -
javap -
jlink -
jmod -
jcmd -
jwebserver
Observação
As opções descritas ao longo do livro são voltadas para o Java 25 e podem variar em versões mais antigas do Java
. Por exemplo, --class-path foi introduzida quando ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.