package Equalsand_Twoequals;
public class IntegerCompare {
public IntegerCompare() {
// TODO Auto-generated constructor stub
}
public static void main(String[] args) {
Integer i1 = 10;
Integer i2 = 10;
Integer i3 = new Integer(10);
Integer i4 = new Integer(10);
int i5 = 10;
Integer i6 = 1000;
Integer i7 = 1000;
Integer i8 = new Integer(1000);
Integer i9 = new Integer(1000);
int i10 = 1000;
/* Equals*/
System.out.println("EQUALS");
System.out.println(i1.equals(i2));
System.out.println(i1.equals(i3));
System.out.println(i3.equals(i4));
System.out.println(i1.equals(i5));
System.out.println(i3.equals(i5));
System.out.println(i6.equals(i7));
System.out.println(i6.equals(i8));
System.out.println(i8.equals(i9));
System.out.println(i6.equals(i10));
System.out.println(i8.equals(i10));
/*==*/
System.out.println("==");
System.out.println(i1==i2);
System.out.println(i1==i3);
System.out.println(i3==i4);
System.out.println(i1==i5); // int compared either to Integer or new Integer will result true
System.out.println(i3==i5); // int compared either to Integer or new Integer will result true
System.out.println(i6==i7); // false because == will compare only upto 127
System.out.println(i6==i8);
System.out.println(i8==i9);
System.out.println(i6==i10); // int compared either to Integer or new Integer will result true
System.out.println(i8==i10); // int compared either to Integer or new Integer will result true
Integer i11 = 10;
Integer i12 = i11;
Integer i13 = new Integer(10);
Integer i14 = i13;
int i15 = 10;
Integer i16 = 1000;
Integer i17 = i16;
Integer i18 = new Integer(1000);
Integer i19 = i18;
int i20 = 1000;
System.out.println("======");
System.out.println(i11==i12);
System.out.println(i13==i14); // Imp one
System.out.println(i14==i11);
System.out.println(i16==i17); // Imp One
System.out.println(i18==i19); // Imp one
System.out.println(i19==i16);
}
}
Output is
EQUALS
true
true
true
true
true
true
true
true
true
true
==
true
false
false
true
true
false
false
false
true
true
======
true
true
false
true
true
false
