Hello, This is java

A) the two strings refer to the same location or different locations?

String oneStr = new String("tam");

String twoStr = new String("tam");

b) Why sometimes they are equal and not equal?

System.out.println(oneStr == twoStr)//false,

equalStrings = oneStr.equals(twoStr);

System.out.println(equalStrings); //true

System.out.println(oneStr.equals(twoStr)); //true