The op= Operators

count += 5 has the same effect as the statement: count = count + 5;

public class MainClass {

  public static void main(String[] arg) {
    int count = 1;

    count += 5;
    System.out.println(count);

    count = count + 5;
    System.out.println(count);

  }

}

 

6
11

The complete set of op= operators:

1. +=
2. -=
3. *=
4. /=
5. %=
6. <<=
7. >>=
8. >>>=
9. &=
10. |=
11. ^=

The ternary operator (The Conditional Operator): result = value>conditionValue ? result1 : result2

if(value > conditionValue){
  result = result1;
}else{
  result = result2;
}

 logical_expression ? expression1 : expression2

 

public class MainClass {
  public static void main(String[] args) {
    int v = 1;
    System.out.println(v == 1 ? "A" : "B");

    v++;
    System.out.println(v == 1 ? "A" : "B");
  }
}

 

hasilnya

A
B

 

http://www.java2s.com/Tutorial/Java/0060__Operators/TheternaryoperatorTheConditionalOperatorresultvalueconditionValueresu