Relational Operators

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  1. >(greater than operator)
  2. >=(greater than or equal to operator)
  3. < (less than operator)
  4. <=(less than or equal to operator)
  1. Relational Operators are applicable only for primitive types except boolean.

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    النادي تداول الخيارات الثنائية public class Test { public static void main(String[] args) { System.out.println(10>20);//false System.out.println(10>10.0);//false System.out.println('a'>'z');//false System.out.println(10.123>10);//true System.out.println(true>false);//Compile time error System.out.println("Arch">"Arch123");//Compile time error } }

  2. we can not perform nesting of relational operator:

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  3. Equality Operators(==,!=)

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    متى يتم بيع الاسهم تداول الاهلي public class Test { public static void main(String[] args) { System.out.println(10==20); System.out.println('9'==98); System.out.println(10==10.0); System.out.println(true==true); } } /* Output: false false true true */

    1. We can apply equality operators even for object references also
    2. r1==r2 returns http://www.gaarchery.org/?kolba=%D8%A7%D9%84%D8%A7%D8%B3%D9%87%D9%85-%D8%A7%D9%84%D8%B3%D8%B9%D9%88%D8%AF%D9%8A%D8%A9-%D8%AA%D8%AF%D8%A7%D9%88%D9%84 الاسهم السعودية تداول true, if and only if both r1 and r2 pointing to the same object on the heap.i.e ‘==’ operator is always mean for reference comparision

      سعر اسهم عمانتل اليوم

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      true

    3. To use the == operator, there should be some relation b/n the types of r1 and r2 (either parent to child/child to parent/same type), otherwise we will get compile time error saying “Incomparable types”
    4. 
      public class Test {
        public static void main(String[] args) {
          String s1=new String("Arch");
          StringBuffer s2=new StringBuffer("Arch");
          Object s3=new Object();
          System.out.println(s1==s2);//incomparable types
          System.out.println(s1==s3);//false
        }
      }
      
    5. For any object reference r,(r==null) is always false.