2017 年 6月 20 日随笔档案 - 等风来。。

2017年6月20日

java string.getBytes(“UTF-8”) javascript equivalent

1. 2. JavaScript has no concept of character encoding for String, everything is in UTF-16. Most of time time the value of a char in UTF-16 matches UTF Read More

posted @ 2017-06-20 18:14 等风来。。 Views(4580) Comments(0) Diggs(0)

Memory consumption of popular Java data types

http://java-performance.info/memory-consumption-of-java-data-types-2/ 如何在Java中分配超过-Xmx限制的内存 http://it.deepinmind.com/java/2014/03/21/allocate-large-he Read More

posted @ 2017-06-20 17:03 等风来。。 Views(143) Comments(0) Diggs(0)

Why String is Immutable or Final in Java

The string is Immutable in Java because String objects are cached in String pool. Since cached String literals are shared between multiple clients the Read More

posted @ 2017-06-20 15:18 等风来。。 Views(342) Comments(0) Diggs(0)

RSA加密常用的填充方式以及常见错误

一、RSA加密常用的填充方式 1.RSA_PKCS1_PADDING 输入：比 RSA modulus 短至少11个字节。如果输入的明文过长，必须切割，然后填充输出：和modulus一样长根据这个要求，对于512bit的密钥，　block length = 512/8 – 11 = 53 字节 Read More

posted @ 2017-06-20 10:36 等风来。。 Views(8147) Comments(0) Diggs(0)

风来了

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