String Literals : String « Data Type « Java Tutorial

1. Java Tutorial
2. Data Type
3. String

You can compose long string literals by using the plus sign to concatenate two string literals.

public class MainClass {

  public static void main(String[] a) {

    String s1 = "1 " + "2";
    String s2 = s1 + " = 3";

    System.out.println(s1);
    System.out.println(s2);

  }

}

1 2
1 2 = 3