String str = "Hello"; int length = str.length(); System.out.println("Length of the string is: " + length); 复制代码 如果不将String.length()方法的返回值赋给一个变量或者直接打印输出,而是单独使用该方法,会导致编译错误。例如: String str = "Hello"; str.length(); // 编译错误:The method...
Example: Java String length() Method The following example shows the usage of java String() method. public class Example { public static void main(String[] args) { String str = "example.com"; // Get the length of str. int len = str.length(); System.out.println(); System.out.printl...
Returns the length of this string. C# [Android.Runtime.Register("length","()I","")]publicintLength(); Returns Int32 the length of the sequence of characters represented by this object. Implements Length() Attributes RegisterAttribute
StringBuffer insert(int index,String str) StringBuffer insert(int index,char ch) StringBuffer insert(int index,Object obj) index指定将字符串插入到StringBuffer对象中的位置的下标。 (8)、reverse() 颠倒StringBuffer对象中的字符 StringBuffer reverse() (9)、delete()和deleteCharAt() 删除字符 StringBuffer...
target 指定接收字符的数组targetStart target 中开始复制子串的下标值例:String s=”this is a demo of the getChars method.”; char buf=new char20;s.getChars(10,14,buf,0); 11)getBytes()替代 getChars()的一种方法是将字符存储在字节数组中,该方法即 getBytes()例:String s = “Hello!你好!”;...
java中数组是没有length()方法的，只有length属性，数组array.length返回的是该数组的长度。字符串String是有length()方法的，str.length()返回的是该字符串的长度。
String toLowerCsae() 小转大 7.2:将字符串两端的多个空格去除 String trim(); 7.3:对两个字符串进行自然顺序的比较 int compareTo(string); 请看如下代码,下面的代码都是针对上面string七种用法而进行一一举例说明: class StringMethodDemo { public static void method_Zhuanhuan_Qukong_Bijiao() ...
The length() method returns the number of characters in a string. Example class Main { public static void main(String[] args) { String str1 = "Java is fun"; // returns the length of str1 int length = str1.length(); System.out.println(str1.length()); } } // Output: 11 ...
String的长度限制 想要搞清楚这个问题,首先我们需要翻阅一下String的源码,看下其中是否有关于长度的限制或者定义。 String类中有很多重载的构造函数,其中有几个是支持用户传入length来执行长度的: public String(byte bytes[], int offset, int length) 1. ...
if start or start > length(). Remarks Returns a string that is a substring of this string. The substring begins with the character at the specified index and extends to the end of this string. Examples: <blockquote> text/java Kopija "unhappy".substring(2) returns "happy" "Harbison".su...