Class data types are capitalized, and primitive data types are not

Primitive data types only hold one piece of data at a time



When a group of statements, including control structures are assembled into a single unit, the unit is called a class

Naming conventions are similar to those of a variable but a class should begin with a capital letter and reference the purpose of the class.

public class GradePointAvg

{

// statements not shown

}

A Java string is a series of characters gathered together, like the word "Hello", or the phrase The expert in anything was once a beginner — Helen Hayes.

The standard way to create a new object of a class in Java:

greeting = new String("Hello");

You can also use just a string literal, which is a set of characters enclosed in double quotes ("), to create a String object.

greeting = "Hello";

Strings can be appended to each other to create a new string using the + or += operator .

This is also called concatenation.

  String start = "Happy Birthday";

    String name = "Jose";

    String result = start + " " + name; // add together strings

Numerical values can be printed to the screen for output

• Example: If a triangle has a side length of 2 stored in memory using identifies side1 and you eant to ouput that information to the screen you could use either:

• System.out.print(2);

• System.out.print(side1): //will display the value stored using the side1 identifier

• System.out.print("side 1") // will display

Don't forget to look at activites on coding bat for addtional practice.

(6 min)

https://codingbat.com/doc/java-string-introduction.html

https://youtu.be/xqFGn5P1Ho8