what is string str in java code example

Example 1: 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);

Example 2: string in java

In java, string is an object. It is sequence of character values enclosed by 
double quotes.