The if statement evaluates a condition and if the result is true then it runs the line of code that follows it. Here is an example of how to test if the value of a variable called I is equal to 5 :
public class Decisions
{
public static void main( String [ ] args )
{
int i = 5 ;
int i = 5 ;
if ( i == 5)
System.out.println( “ I is equal to 5 “ );
}
}
If you change i to 4 and run this program again you will see that no message is printed.
else
we know that if the condition is true then the code directly afer the if statement is run. You can run code for when the condition is false by using the else statement
public class Decisions
{
public static void main ( String [ ] args )
{
int i = 4 ;
if ( i = = 5 )
System.out.println ( “ i is equal to 5 “);
else
System.out.println( “i is not equal to 5 “ );
}
}
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