代码示例 publicclassIsBlankExample{publicstaticvoidmain(String[]args){Stringstr1=" ";// 空格Stringstr2="\t\n";// 制表符和换行符Stringstr3="Hello";// 普通字符串System.out.println(str1.isBlank());// trueSystem.out.println(str
publicclassTest{ publicstaticvoidmain(String[] args){ String str1 ="11";String str2 =newString...
String.class.getName() returns "java.lang.String" byte.class.getName() returns "byte" (new Object[3]).getClass().getName() returns "[Ljava.lang.Object;" (new int[3][4][5][6][7][8][9]).getClass().getName() returns "[[[I" 结果 此对象表示的类或接口的名称。 getClass...
The String class provides methods for dealing with Unicode code points (i.e., characters), in addition to those for dealing with Unicode code units (i.e., char values). Unless otherwise noted, methods for comparing Strings do not take locale into account. The Collator class provides methods...
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...
String 类有 11 种构造方法,这些方法提供不同的参数来初始化字符串,比如提供一个字符数组参数: StringDemo.java 文件代码: publicclassStringDemo{publicstaticvoidmain(Stringargs[]){char[]helloArray={'r','u','n','o','o','b'};StringhelloString=newString(helloArray);System.out.println(helloString...
public static void main(String[] args) { String str = "123546"; Boolean b = isNumber(str); System.out.println(b); } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 1.2、字节与字符串 字节常用于数据传输以及编码转换的处理之中,String 也能方便的和 byte[] 相互转换 ...
1publicclassStringTest1 {23publicstaticvoidmain(String[] args) {4String s = "Java";56//byte[] getBytes():把字符串转换为字节数组。转为数组的话,就需要遍历7byte[] b =s.getBytes();8for(intx=0;x<s.length();x++){9System.out.println(b[x]);//转为ASCII码表10}11System.out.println("...
extends Event { @Label("Hello World") @Description("Helps the programmer getting started") static class HelloWorld extends Event { @Label("Message") String message; } public static void main(String[] args) { HelloWorld event = new HelloWorld(); event.message = "...
public class Test { public static void main(String args[]) { String str1 = "String1"; String str2 = "String2"; StringBuffer str3 = new StringBuffer( "String1"); boolean result = str1.contentEquals( str3 ); System.out.println(result); ...