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static final long C0 = 1L; static final long C1 = C0 * 1000L; static final long C2 = C1 * 1000L; static final long C3 = C2 * 1000L; static final long C4 = C3 * 60L; static final long C5 = C4 * 60L; static final long C6 = C5 * 24L;
java中经常会碰到“long c = 1L”的写法,L表示long ,long占用8个字节,表示范围:-9223372036854775808 ~ 9223372036854775807
1L其实就是1。
常量后面跟这个一般是指类型,1L表示1是长整型,如果是1f 表示是float型
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原文地址:http://my.oschina.net/weiweiblog/blog/483297