System.out.println(str1.codePointAt(index)); String str2= str1 +"abc";//顺序访问一个String正确的方式intcount = str2.codePointCount(0, str2.length());for(inti=0; i < count; ++i) {intindex1 = str2.offsetByCodePoints(0, i);intcp =str2.codePointAt(index1); System.out.print(Charac...
/** Cache the hash code for the string */ private int hash; // Default to 0 /** * @author Gremmie102 * @date 2022/4/21 15:49 * @purpose : 比较字符串引用 */ public class StringTestDemo1 { public static void main(String[] args) { //s1和s2引用的是不同的对象,s1和s3引用的是...
{/**The value is used for character storage.*/privatefinalcharvalue[];/**The offset is the first index of the storage that is used.*/privatefinalintoffset;/**The count is the number of characters in the String.*/privatefinalintcount;/**Cache the hash code for the string*/privateinthas...
public static Integer hashCode(String str, Integer multiplier) { int hash = 0; for (int i = 0; i < str.length(); i++) { hash = multiplier * hash + str.charAt(i); } return hash; } /** * 计算 hash code 冲突率,顺便分析一下 hash code 最大值和最小值,并输出 * @param multip...
();//解析每个字符簇for(Stringmoji:bgS){//输出单个字符簇//把单个字符簇转为码点数组int[]cps=moji.codePoints().toArray();System.out.print(moji+":{");//解析码点for(intcp:cps){//码点转字符StringcpChar=String.valueOf(Character.toChars(cp));System.out.print(cpChar+":[");System.out....
publicstaticvoidmain(Stringarg[]) { Scannersc=newScanner(System.in); System.out.println("enter a number n :"); doublen=sc.nextDouble(); System.out.println("enter a base number "); doubleb=sc.nextDouble(); doublec=0; while(n>1) ...
即Java使用UTF16编码构建String,对于扩展字符,String将使用2个char 这非常好验证 public static voidmain(String[]args){String a="🐎";System.out.println(a.length());System.out.println(a.codePoints().count());}输出21 上例可知,对于想要获取字符串长度的场景,如果存在扩展字符的情况下我们使用length()...
code 项目地址或者文件名 # vscode 就会在新窗口中打开该项目或者文件 如果你希望在已经打开的窗口打开文件,可以使用-r参数, 当然也可以菜单栏文件然后 open 项目,但感觉还是有些麻烦。 1.3 连接远程服务器开发 这个也是需要掌握的必备技能了, 毕竟我们本地的机器啥配置自己清楚, 项目往往都放到服务器上, 而这个就...
publicclassHelloWorld{privatestaticfinal StringCONST="this-is-a constant var";privateString name;publicHelloWorld(String name){this.name=name;}publicvoidsayHello(){System.out.println("hello, "+name);}publicstaticvoidmain(String[]args){System.out.println(CONST);HelloWorld h1=newHelloWorld("lumin");...