publicfinalclassStringimplementsjava.io.Serializable,Comparable<String>,CharSequence{/** The value is used for character storage. */privatefinal char value[];/** Cache the hash code for the string */privateint hash;// Default to 0...} 从上面的源码可以看出: String类被final关键字修饰,意味着S...
可参考JDK中的解释或The Java Virtual Machine Specification, Java SE 8 Edition (§5.1),简单来说就是一个可以手动将未存在常量池的字符串存入常量池并返回其引用的方法。 示例3 现在再来看另一种方式创建String的例子: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 public class StringDemo3 { public ...
The String class represents character strings. All string literals in Java programs, such as "abc", are implemented as instances of this class. Strings are constant; their values cannot be changed after they are created. String buffers support mutable strings. Because String objects are immutable ...
importjava.util.Scanner;publicclassStringToClassExample{publicstaticvoidmain(String[]args){// 步骤一:获取类名的字符串Scannerscanner=newScanner(System.in);System.out.print("请输入类名:");StringclassName=scanner.nextLine();// 步骤二:调用ClassLoader的loadClass()方法Class<?>clazz=null;try{clazz=Clas...
这段代码在JDK 6中运行,会得到两个false,而在JDK 7、8中运行,会得到一个true和一个false。产 生差异的原因是,在JDK 6中,intern()方法会把首次遇到的字符串实例复制到永久代的字符串常量池 中存储,返回的也是永久代里面这个字符串实例的引用,而由StringBuilder创建的字符串对象实例在 Java堆上,所以必然不可能是...
hibyte - 16ビットの各Unicodeコード単位の上位8ビット 関連項目: String(byte[], int, int, java.lang.String), String(byte[], int, int, java.nio.charset.Charset), String(byte[], int, int), String(byte[], java.lang.String), String(byte[], java.nio.charset.Charset), String(byte[]...
下面是一个完整的示例代码,展示了如何在Java中实现String输入: importjava.util.Scanner;publicclassMain{publicstaticvoidmain(String[]args){// 创建一个Scanner对象Scannerscanner=newScanner(System.in);// 使用Scanner对象读取字符串输入System.out.print("请输入一个字符串:");Stringinput=scanner.nextLine();//...
1importjava.util.Scanner;23//键盘录入一串字符,将字符中大写转化成小写,将小写转化为大写,数字以*来代替4publicclasstest04 {5publicstaticvoidmain(String[] args) {6//实例化Scanner7Scanner input =newScanner(System.in);8System.out.println("请输入一串字符");910String s =input.next();11//将字符串...
Java 中的基本数据类型只有 8 个 ：byte、short、int、long、float、double、char、boolean；除了基本...
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 ...