Assignment Operators
The java assignment operator statement has the following syntax:<variable> = <expression>
If the value already exists in the variable it is overwritten by the assignment operator (=).
Ex:
public class AssignmentOperatorsDemo {
public AssignmentOperatorsDemo( ) {
// Assigning Primitive Values
int j, k;
j = 10; // j gets the value 10.
j = 5; // j gets the value 5. Previous value is overwritten.
k = j; // k gets the value 5.
System.out.println("j is : "+j);
System.out.println("k is : "+k);
// Assigning References
Integer i1 = new Integer("1");
Integer i2 = new Integer("2");
System.out.println("i1 is : "+i1);
System.out.println("i2 is : "+i2);
i1 = i2;
System.out.println("i1 is : "+i1);
System.out.println("i2 is : "+i2);
// Multiple Assignments
k = j = 10; // (k = (j = 10))
System.out.println("j is : "+j);
System.out.println("k is : "+k);
}
public static void main(String args[]){
new AssignmentOperatorsDemo();
}
}
Assignment Operators
x operation= y
is equivalent to
x = x operation y
x and y must be numeric or char types except for "=", which allows x and y also to be object references.
In this case, x must be of the same type of class or interface as y. If mixed floating-point and integer
types, the rules for mixed types in expressions apply.
=
Assignment operator.
x = y;
y is evaluated and x set to this value.
The value of x is then returned.
