describe various string objects for strings and characters processing code example

Example 1: how to make a string java

String newString = "Hello World";

Example 2: string java

System.out.println("abc");
     String cde = "cde";
     System.out.println("abc" + cde);
     String c = "abc".substring(2,3);
     String d = cde.substring(1, 2);