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
}
}check if string is decimal java
Scanner in = new Scanner(System.in);
String ip1 = in.nextLine();
if( ip1.matches("^\\d+\\.\\d+") )
System.out.println(ip1+"----is a decimal number");
else
System.out.println(ip1+"----is a not decimal number");Copyright © 2021 Codeinu
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