constchar* GCCause::to_string(GCCause::Cause cause) {switch(cause) {case_java_lang_system_gc:return"System.gc()";case_full_gc_alot:return"FullGCAlot";case_scavenge_alot:return"ScavengeAlot";case_allocation_profiler:return"Allocation Profiler";case_jvmti_force_gc:return"JvmtiEnv ForceGarbage...
Generational low-pause garbage collection.Garbage collection is also taking big steps forward. The Z Garbage Collector (ZGC) has a strong focus on ultralow pause times, which can lead to a higher memory footprint or higher CPU usage than other garbage collectors. Starting with Java 21, both o...
package top.jacktgq.ch1.safeend; /** * * @author 糖果墙 * @createDate 2019年7月27日 上午12:25:26 * @description 如果线程发生了InterruptException异常了会发生什么情况 * */ public class HasInterruptException { public static class UseThread extends Thread { public UseThread(String name) { s...
String lib; // The lib variable gets set multiple times so you can't make it // effectively final. // Create a final String that you can use inside of the run method final String fLib = lib; AccessController.doPrivileged((PrivilegedAction<Void>) () -> { System.loadLibrary(fLib); retu...
String objects reaching the specified age are considered candidates for deduplication. An object's age is a measure of how many times it has survived garbage collection. This is sometimes referred to as tenuring; see the -XX:+PrintTenuringDistribution option. Note that String objects that are pro...
string name = 2; uint32 age = 3; } 1. 2. 3. 4. 5. 6. 7. 8. 9. .proto 文件中是定义 proto 消息的文件(注意:这篇文章中为了通俗,所提到的 proto 消息就是我们在 proto 文件中定义的数据结构),而我们实际使用中需要将其转换成不同平台的源代码,ProtoBuf 提供了一个 protoc 工具,一般 Linux...
The full version string for this update release is 1.7.0_451-b06 (where "b" means "build"). The version number is 7u451. This JDK conforms to version 7.1 of the Java SE Specification (JSR 336 MR 1 2015-03-12). As of July 2022, Java 7 has ended its service life. Oracle prov...
DTDReports asjava.lang.Stringinformation about the DTD, if any, associated with the stream, and provides a method for returning custom objects found in the DTD. AttributeAttributes are generally reported as part of aStartElementevent. However, there are times when it is desirable to return an ...
System.out.println(bd.toEngineeringString()); System.out.println(bd.toPlainString()); TheBigDecimalclass takes a floating point value in a scientific notation as a parameter. We use two methods of the class to print the value in the engineering and plain strings. ...
scrub symbol table 表示清理元数据符号引用耗时,符号引用是 Java 代码被编译成字节码时,方法在 JVM 中的表现形式,生命周期一般与 Class 一致,当 _should_unload_classes 被设置为 true 时在 CMSCollector::refProcessingWork() 中与 Class Unload、String Table 一起被处理。