String parsing

String has two methods: = and equals:

=: Address in heap memory

Equals (): a value greater than limit

String s1 = "hello"; String s2 = "hello"; String s3 = new String ("hello"); s1 = s2; // The result is trues1 = s3; // The result is falses1.equals (s2); // The result is trues1.equals (s3); // The result is true.

Schematic:

The content of String cannot be changed:

Public class StringDemo {public static void main (String args []) {String str = "hello"; // declare String str = str + "world !!! "; // Modify the string System. out. println (" str = "+ str );}};

Schematic:

Frequently used:

String parsing