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