在Java中,所有类似“ABCabc”的字面值,都是String的实例;String类位于java.lang包下,是Java语言的核心类,提供了字符串的比较、查找、截取、大小写转换等操作;Java语言为“+”连接符以及对象转换为字符串提供了特殊支持,字符串对象可以使用“+”连接其他对象。String的部分源码如下: 代码语言:javascript 代码运行次数:...
/** * Returns a canonical representation for the string object. * * A pool of strings, initially empty, is maintained privately by the * class {@code String}. * * When the intern method is invoked, if the pool already contains a * string equal to this {@code...
because nearly all known parsers use one of the affected classes for “name-value” representation. All these format parsers may create nested maps, which further increases the number of maps created per second.
每个运行时常量池都是从Java虚拟机的方法区域(§2.5.4)中分配的。当Java虚拟机创建类或接口(§5.3)时,将构造类或接口的运行时常量池(§2.5.5)。 A run-time constant pool is a per-class or per-interface run-time representation of the constant_pool table in a class file (§4.4). It contains ...
* Returns a canonical representation for the string object. * * A pool of strings, initially empty, is maintained privately by the * class {@codeString}. * * When the intern method is invoked, if the pool already contains a * string ...
Since toString() is available on every Java class, it is the go-to method to acquire any readable representation of Object state in general and can therefore be used by many different agents without your prior knowledge. Although not specified in the JLS, any seasoned developer assumes and en...
static StringvalueOf(long l) Returns the string representation of the long argument. static StringvalueOf(Object obj) Returns the string representation of the Object argument. Methods declared in class java.lang.Object clone, finalize, getClass, notify, notifyAll, wait, wait, waitField...
To store a String in a String pool, we use a technique called String interning. Here’s what Javadoc tells us about the intern() method:/** * Returns a canonical representation for the string object. * * A pool of strings, initially empty, is maintained privately by the * class {@...
Intern() Returns a canonical representation for the string object. JavaFinalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object) Join(ICharSequence, ICharSequence[]) Returns a new Strin...
* @return a string representation of the argument in base 10.//返回:以10为基数的参数的字符串表示形式。 */ @IntrinsicCandidate public static String toString(int i) { int size = stringSize(i); if (COMPACT_STRINGS) { byte[] buf = new byte[size]; ...