Is it possible to append a single character to the end of array or string in java. Example:
private static void /*methodName*/ () {
String character = "a"
String otherString = "helen";
//this is where i need help, i would like to make the otherString become
// helena, is there a way to do this?
}
7 Answers
1. String otherString = "helen" + character;
2. otherString += character;
You'll want to use the static method Character.toString(char c) to convert the character into a string first. Then you can use the normal string concatenation functions.
new StringBuilder().append(str.charAt(0))
.append(str.charAt(10))
.append(str.charAt(20))
.append(str.charAt(30))
.toString();
This way you can get the new string with whatever characters you want.
First of all you use here two strings: "" marks a string it may be ""-empty "s"- string of lenght 1 or "aaa" string of lenght 3, while '' marks chars . In order to be able to do String str = "a" + "aaa" + 'a' you must use method Character.toString(char c) as @Thomas Keene said so an example would be String str = "a" + "aaa" + Character.toString('a')
just add them like this :
String character = "a";
String otherString = "helen";
otherString=otherString+character;
System.out.println(otherString);
And for those who are looking for when you have to concatenate a char to a String rather than a String to another String as given below.
char ch = 'a';
String otherstring = "helen";
// do this
otherstring = otherstring + "" + ch;
System.out.println(otherstring);
// output : helena
public class lab {
public static void main(String args[]){
Scanner input = new Scanner(System.in);
System.out.println("Enter a string:");
String s1;
s1 = input.nextLine();
int k = s1.length();
char s2;
s2=s1.charAt(k-1);
s1=s2+s1+s2;
System.out.println("The new string is\n" +s1);
}
}
Here's the output you'll get.
* Enter a string CAT The new string is TCATT *
It prints the the last character of the string to the first and last place. You can do it with any character of the String.
