checkLetter[判断字符是否为字母] output[输出结果] end(结束) start --> input --> check --> getChar --> checkLetter --> output --> end check -- 字符串长度大于0 --> getChar check -- 字符串长度等于0 --> output getChar -- 获取第一个字符 --> checkLetter checkLetter -- 字符为字母...
* 判断一个字符串是否为字母 * @param data * @return */publicstaticbooleancheckData(String data){char c=data.charAt(0);if(((c>='a'&&c<='z'c>='A'&&c'Z'))){returntrue;}else{returnfalse;}}
check 检查 第六章: byte(字节) char(字符) int(整型) long(长整型) float(浮点型) double(双精度) boolean(布尔) short(短整型) Byte (字节类) Character (字符类) Integer(整型类) Long (长整型类) Float(浮点型类) Double (双精度类) Boolean(布尔类) Short (短整型类) Digit (数字) Letter (字...
B. byte 字节 Boolean 布尔 banana 香蕉 base 基础 buffer 缓冲器 button 按钮 break 中断 body 身体C. color 颜色 class 类 count 计数 client 客户 code 代码 calculation 计算 cell 单元 circle 圆 capital 首都 catch 捕获 check 检查 container 容器 component 组件 command 命令 cube 立方, 三次方 char(=c...
*@return*/publicstaticbooleancheckChineseLetter(String passengerName) { Pattern pattern=Pattern.compile(CHINESE_LETTER_REGEX); Matcher matcher=pattern.matcher(passengerName);if(matcher.matches()) {//不包含特殊字符returntrue; }else{//包含了特殊字符returnfalse; ...
Character.isLetter()这个方法用来判断,这个字符是否为字母 Character.isDigit()这个方法判断,这个字符是否为数字字符 Character.isWhitespace()这个方法判断是否为空格 Character.isUpperCase()这个方法判断是否为大写字母 Character.isLowerCase()这个方法判断是否为小写字母 Character.toUpperCase()这个方法是强转成大写字母 Cha...
importjava.util.Scanner;publicclassCharacterCheckExample{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.print("请输入一个字符:");charch=scanner.next().charAt(0);// 读取输入的字符if(Character.isLetter(ch)){System.out.println("输入的是字母");}elseif(Character...
Append the letter k or K to indicate kilobytes, m or M to indicate megabytes, g or G to indicate gigabytes. The young generation region of the heap is used for new objects. GC is performed in this region more often than in other regions. If the size for the young generation is too ...
If you check the properties of a char with the appropriate Character method, your code will work with all major languages. For example, the Character.isLetter method returns true if the character is a letter in Chinese, German, Arabic, or another language. The following list gives some of ...
If you encounter this error, the JDK is already installed properly. However, you will need to install the 64-bit JRE separately to install a Public JRE.To avoid the error, the workaround is to to do one of the following:Install the 64-bit JRE before installing the 64-bit JDK. The ...