System.out.println(myName); http://stackoverflow.com/questions/6952363/java-replace-a-character-at-a-specific-index-in-a-string
".Stringstr="Java Exercises!";// Print the original string.System.out.println("Original String = "+str);// Get the character at positions 0 and 10.intindex1=str.charAt(0);// Get the ASCII value of the character at position 0.intindex2=str.charAt(10);// Get the ASCII value of t...
The index of the first character is 0, while the index of the last character is length()-1. For example, the following code gets the character at index 9 in a string: String anotherPalindrome = "Niagara. O roar again!"; char aChar = anotherPalindrome.charAt(9); Indices begin at 0...
StringhexString="0xG";intdecimalValue=0;for(inti=2;i<hexString.length();i++){// Start from index 2 to exclude "0x" prefixcharc=hexString.charAt(i);intdigitValue=Character.digit(c,16);if(digitValue==-1){thrownewIllegalArgumentException("Illegal hexadecimal character: "+c);}decimalValue=...
int indexOf(String str):返回特定String中字符串str的索引。 int indexOf(String str, int fromIndex):返回给定字符串中指定索引fromIndex后,字符串str的索引。 如果在特定String中找不到指定的char/substring,则上述所有函数都返回 -1。 JavaString indexOf()方法示例 ...
Write a Java program to find the index of the first unique character in a given string. Assume that there is at least one unique character in the string. Pictorial Presentation: Sample Solution: Java Code: importjava.util.*;publicclassSolution{publicstaticvoidmain(String[]args){// Test the ...
int indexOf(String subString, int start) //子串的第一次出现位置, 从start开始查找 int indexOf(String string) //子串的第一次出现位置 //插入字符 StringBuilder insert(int offset, boolean b) StringBuilder insert(int offset, int i) StringBuilder insert(int offset, long l) ...
简介:解决异常 java.net.URISyntaxException: Illegal character in query at index java.net.URISyntaxException表示你在尝试创建一个 URI 对象时,传递了一个非法的 URI字符串 这个异常通常是因为 URI 字符串中包含了不合法的字符,比如空格、特殊字符等。在 URI 中,某些字符是需要进行编码的,例如空格会被编码为%...
String str = "晚来天欲雪 能饮一杯无"; 代码语言:txt AI代码解释 System.out.println("字符串的长度是:"+str.length()); //字符串的雪字打印输出 charAt(int index) 代码语言:txt AI代码解释 System.out.println(str.charAt(4)); //取出子串 天欲 ...
(21); char i=test.charAt(-1); System.out.println(i); } } 异常信息 20 Exception in thread "main..." java.lang.StringIndexOutOfBoundsException: String index out of range: -1 at java.lang.String.charAt...个人总结: 如果程序中出现StringIndexOutOfBoundsException,表示程序尝试获取大于等于字符...