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3 cards from this section. Quick, good the night before a test.
What does the -Xmx option stand for?
Think about how much memory you want to allocate to your program.
Which tool is used for graphical monitoring of Java applications?
Consider the tools that provide a user interface.
What does the -Xms flag do?
Think about how the JVM starts up.
True or False: jvisualvm is a command-line tool.
Consider the nature of user interface tools versus command-line tools.
Your Java application has frequent pauses due to garbage collection. Describe how you would use JVM options and diagnostic tools to identify and solve this issue.
Think about both memory allocation and the analysis of performance metrics.
You need to profile a high-performance application. Explain a step-by-step approach using Java tools to gather performance data.
Consider both the setup phase and the analysis stage.
5 more questions in this section. Enroll free to practise them all.
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