compound additive operator (+=) and Strings : Assignment Operators « Operators « SCJP

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2.10.8.compound additive operator (+=) and Strings

public class MainClass{

    public static void main(String[] argv){

        String s = "123";

        s += "45";

        s += 67;

        System.out.println(s);

    

        int b = 2;

        System.out.println("" + b + 3);

    }

}

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2.10.Assignment Operators
	2.10.1.	Assignment Operator Summary
	2.10.2.	Compound Assignment Operators
	2.10.3.	An arithmetic operator with = perform an operation on the variable on the left side and store the results in the variable.
	2.10.4.	a = b = c is evaluated as a = (b = c).
	2.10.5.	Simple assignment uses =
	2.10.6.	Assignment operators include an implicit cast.
	2.10.7.	Java uses the + and += operators to indicate concatenation for string values.
	2.10.8.	compound additive operator (+=) and Strings

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