Java Strings
Java Tutorial » Java Strings
Strings, widely used in Java programming, are used for storing characters surrounded by double quotes.
In the below example, we create a variable of type string and then we assign it a value:
Example:
Hey, Hey man.
public class Main {
public static void main(String[] args) {
String greeting = "Hey, Hey man.";
System.out.println(greeting);
}
}
Output:public static void main(String[] args) {
String greeting = "Hey, Hey man.";
System.out.println(greeting);
}
}
Hey, Hey man.
String Length
The length() method will return the number of characters that are contained in the string.
Example:
Text length of the string is: 49
public class Main {
public static void main(String[] args) {
String my_txt = "agernic tutorial contain pretty good explanations";
System.out.println("Text length of the string is: " + my_txt.length());
}
}
Output:public static void main(String[] args) {
String my_txt = "agernic tutorial contain pretty good explanations";
System.out.println("Text length of the string is: " + my_txt.length());
}
}
Text length of the string is: 49
String Concatenation
Combine more strings using + operator is called concatenation:
This will returns a new string as string1 with string2 added to it at the end.
Example: use the + method
Chris Langford
public class Main {
public static void main(String args[]) {
String Name = "Chris";
String SurName = "Langford";
System.out.println(Name + " " + SurName);
}
}
Output:public static void main(String args[]) {
String Name = "Chris";
String SurName = "Langford";
System.out.println(Name + " " + SurName);
}
}
Chris Langford
Note: we have added an empty text (" ") to create a space between mames.
We use the concat() method to concatenate two strings
Example: concat() method
Chrys Store
public class Main {
public static void main(String[] args) {
String Name = "Chrys ";
String SurName = "Store";
System.out.println(Name.concat(SurName));
}
}
Output:public static void main(String[] args) {
String Name = "Chrys ";
String SurName = "Store";
System.out.println(Name.concat(SurName));
}
}
Chrys Store
Finding a Character or character sequence in a String
In a specified text indexOf() method returns the index (position) in a string.
Example:
14
public class Main {
public static void main(String[] args) {
String my_txt = "please locate me where is the position of the word: me";
System.out.println(my_txt.indexOf("me"));
}
}
Output:public static void main(String[] args) {
String my_txt = "please locate me where is the position of the word: me";
System.out.println(my_txt.indexOf("me"));
}
}
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Java String to init, split, length, methods, format, array, contains, compare, equals, concatenation Java Strings imutable, substring, list, compare,
Java String - java
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