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GeezerVison is showing github.com — Java-Programs/String/checkFirstCharOfStr.java at master · divScorp/Java-Programs Expand file tree/ Copy pathcheckFirstCharOfStr.javaMore file actions 16 lines (14 loc) · 520 Bytes / Copy pathcheckFirstCharOfStr.javaFile metadata and controls16 lines (14 loc) · 520 Bytes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 package String; public class checkFirstCharOfStr { public static void main(String[] args) { String str = "helloo777"; Boolean flag1 = str.substring(0, 1).matches("[0-9]"); //[0-9] Regular expression to match the number between 0-9. //we can also use \\d to to check every digit if(flag1){ System.out.println("First Character is a number..!"); }else{ System.out.println("First character is not a number..!"); } } } |
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