Java计算对象占用的内存大小
- 引入jar包
Gradle
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implementation "com.carrotsearch:java-sizeof:${javaSizeOf}"
Maven
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6<!-- https://mvnrepository.com/artifact/com.carrotsearch/java-sizeof -->
<dependency>
<groupId>com.carrotsearch</groupId>
<artifactId>java-sizeof</artifactId>
<version>0.0.5</version>
</dependency>
- 代码 执行后输出结果
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2String[] arrays = new String[100_0000];
System.out.println("占用内存:" + RamUsageEstimator.humanSizeOf(arrays));1
占用内存:3.8 MB