The indexOfString is slightly faster for direct access, but somewhat slower for indirect. That's because indexOf(String) is a JVM intrinsic: its Java code is ... ... <看更多>

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contains() was introduced in Java 1.4 and helps to make the code more readable. # Benefits. Most checks against an indexOf value compare it with -1 because 0 is ... ... <看更多>

In the case of indexOf() , one of those factors is the expected size of strings. ... so a Unicode character does not always fit in a Java character. ... <看更多>