java check numeric integer code example

Example 1: test if string is float java

public static void main(String[] args) {
    String str = "5588";
    //check if int
    try{
        Integer.parseInt(str);
    }catch(NumberFormatException e){
        //not int
    }
    //check if float
    try{
        Float.parseFloat(str);
    }catch(NumberFormatException e){
        //not float
    }
}

Example 2: isnumber java

// find value is number or not in java..
// if the value is number output is true 
// if the value is not a number then output is false.. 


public class Test {

   public static void main(String args[]) {
      System.out.println(Character.isDigit('c')); // false 
      System.out.println(Character.isDigit('5')); // true
   }
}