histo浅大小
摘要：btrace sizeof 与jmap -histo 都是shallow size
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posted @ 2024-05-15 15:04
05 2024 档案
指针压缩
摘要：1 查看 $ java -XX:+PrintCommandLineFlags -version -XX:-UseCompressedClassPointers -XX:-UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UseCompres
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posted @ 2024-05-15 14:10
intern
摘要：9 static void test01(){ 10 String s1 = new String("1")+new String("23"); 11 s1.intern(); 12 String s2 = "123"; 13 System.out.println( s1 == s2);//true
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posted @ 2024-05-10 14:34
