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Strings.java

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public class Strings {

public static void main(String[] args) {

String a = "Hello, world!";

String b = "Hello, world!!".substring(0, 13);

String c = "Hello, ";

c += "world!";

String d = "Hello, w"+"orld!"; // constant expr, interned

String e = a.substring(0, 13);

System.out.println((a == b) + " " + a.equals(b));

System.out.println((a == c) + " " + a.equals(c));

System.out.println((a == d) + " " + a.equals(d));

System.out.println((a == e) + " " + a.equals(e));

}

/*viz_options {"showStringsAsObjects":true}*/