publicfinalclassStringimplementsjava.io.Serializable, Comparable<String>, CharSequence {/**The value is used for character storage.*/privatefinalcharvalue[];/**Cache the hash code for the string*/privateinthash;//Default to 0} private final char value[]; 底层是字符数组实现,该值是使用final修饰,...
接着将in赋值给int类型的i,因为in是Integer类型的对象,所以在这里程序底层进行了自动拆箱,将in对象转换为基本数据类型,最后将i加1并打印。 ØScanner类 之前写的程序,如果要设置一些参数,可以在编写代码的时候设置几个固定的参数,但是如果将需求变为参数不固定,在程序运行过程中输入参数,就无法满足。JDK5.0之后,J...
//CharSequence定义publicinterfaceCharSequence//StringBuffer定义publicfinalclassStringBufferextendsAbstractStringBuilderimplementsjava.io.Serializable,CharSequence//StringBuilder定义publicfinalclassStringBuilderextendsAbstractStringBuilderimplementsjava.io.Serializable,CharSequence//String定义publicfinalclassStringimplements java.i...
而Java中反斜杠是特殊字符，需要用两个反斜杠表示一个普通斜杠，拆分成功后，循环打印这个字符串数组，...
Android.Views.Accessibility Android.Views.Animations Android.Views.Autofill Views.ContentCaptures Android.Views.DisplayHash Android.Views.InputMethods Views.Inspectors Android.Views.TextClassifiers Android.Views.TextService Android.Views. SystemInterop Java.Awt.Font...
publicfinalclassStringBuilderextendsAbstractStringBuilderimplementsjava.io.Serializable,CharSequence 这是源码从这里可以看出两者都可序列化,CharSequence是一个字符序列,从这里我们 看不出来区别 看下面的代码可以看出: 1、StringBuffe方法前都加了synchronized所以第一个区别就是StringBuffer是线程安全的,适合多线程环境。
//Java中sout()输出时,默认会加上toString()Stringstr="小红";//System.out.println(str);输出的是一样的效果System.out.println(str.toString());Stringstr2[]={"1","2","3","4"};System.out.println(str2.toString());/*;在输出的时候,默认是使用toString()方法的。小红[Ljava.lang...
public class StringDemo { public static void main(String[] args) { String palindrome = "Dot saw I was Tod"; int len = palindrome.length(); char[] tempCharArray = new char[len]; char[] charArray = new char[len]; // put original string in an // array of chars for (int i = ...
Returns a string representing the data in this sequence. void trimToSize() Attempts to reduce storage used for the character sequence. Methods inherited from class java.lang.Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait Methods inherited from interface ...
java虚拟机会自动调用System类 /* register the natives via the static initializer. * * VM will invoke the initializeSystemClass method to complete * the initialization for this class separated from clinit. * Note that to use properties set by the VM, see the constraints ...