ch4-Sum and concatenation

Chapter_4     Exercise_4-1

Exercise_4-2

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Sum.java

public class Sum
{
public static void main(String[] args)
{
int a = 1, b = 2;

System.out.println("a + b = " + a + b); // concatenate a and b
System.out.println("a + b = " + (a + b)); // compute a + b
}
}
/*
javac Sum.java
java Sum
a + b = 12
a + b = 3
*/

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Chapter_4     Exercise_4-1

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Exercise_4-2