The toUpperCase() method converts a string to upper case letters.Note: The toLowerCase() method converts a string to lower case letters.Syntaxpublic String toUpperCase() ParametersNone.Technical DetailsReturns: A String value, representing the new string converted to upper case...
Example: Java String toUppercase(Locale locale) MethodThe following example shows the usage of java String() method.public class Example { public static void main(String[] args) { String str = "The Quick BroWnFoX jumps over the laZy Dog!"; // Convert the above string to all lowercase. ...
String the String, converted to uppercase. Attributes RegisterAttribute Remarks Converts all of the characters in this String to upper case using the rules of the default locale. This method is equivalent to toUpperCase(Locale.getDefault()). Note: This method is locale sensitive, and may pro...
public static void main(String args[]) { String st1 = "helloworld"; System.out.println(st1.toUpperCase()); } } 复制代码 1. 2. 3. 4. 5. 6. 7. 8. 9. Java String trim() 此方法用于删除字符串前后是否有空格,如没有空格则直接返回字符串。 public class TrimTest { public static void ...
Compiled from "StringExample.java" public class com.lagou.interview.StringExample { public com.lagou.interview.StringExample(); Code: 0: aload_0 1: invokespecial #1 // Method java/lang/Object."<init>":()V 4: return LineNumberTable: line 3: 0 public static void main(java.lang.String[])...
publicStringtoUpperCase()//Uses default Locale rulespublicStringtoUpperCase(Localelocale)//Optional Locale information Let us start with a very simple example to understand the usage oftoUpperCase()method. Stringoriginal="Hello, World!";StringupperCase=original.toUpperCase();//String upperCase = original...
charAt()方法 (charAt()method) StringcharAt()function returns the character located at the specified index. 字符串charAt()函数返回位于指定索引处的字符。 public class Demo { public static void main(String[] args) { String str = "studytonight"; ...
String s=new String(chars); i nt len=s.length(); 2、charAt() 截取一个字符 例:char ch; ch="abc".charAt(1); 返回'b' 3、 getChars() 截取多个字符 例:String s="this is a demo of the getChars method."; char buf[]=new char[20]; ...
9.1.2String对象的创建 String的实例化方式: 方式一:通过字面量定义的方式 方式二:通过new + 构造器的方式 String s1 ="javaEE"; String s2 ="javaEE"; String s3 = new String("javaEE"); String s4 = new String("javaEE"); System.out.println(s1 == s2);//true ...
18、toUpperCase()转换为大写 19、StringBuffer构造函数 StringBuffer定义了三个构造函数: StringBuffer() StringBuffer(int size) StringBuffer(String str) StringBuffer(CharSequence chars) (1)、length()和capacity()一个StringBuffer当前长度可通过length()方法得到,而整个可分配空间通过capacity()方法得到。