Is toString() called when a reference of String class is printed in JAVA? -

this question has answer here:

• tostring() method within system.out.println() double call? 3 answers

when printing reference of other type string, output name of class along hashcode / string returned tostring() method. when reference of string printed, actual "string values" shown, tostring() called in case ?

no. if @ the source code println(string), you'll see:

public void println(string x) {     synchronized (this) {         print(x);         newline();     } } 

the difference between , generic object-signature version string.valueof not called:

public void println(object x) {     string s = string.valueof(x);     synchronized (this) {         print(s);         newline();     } } 

and string.valueof method contains call tostring:

public static string valueof(object obj) {     return (obj == null) ? "null" : obj.tostring(); } 

---

you should used browsing source files of jdk if you're curious details such this.