Info Tech Guide

The if-then Statement
 void applyBrakes(){
if (isMoving){ // the "if" clause: bicycle must moving
currentSpeed--; // the "then" clause: decrease current speed
}
}
void applyBrakes(){
if (isMoving) currentSpeed--; // same as above, but without braces
}



The if-then-else Statement
void applyBrakes(){
if (isMoving) {
currentSpeed--;
} else {
System.err.println("The bicycle has already stopped!");
}
}

class IfElseDemo {
public static void main(String[] args) {

int testscore = 76;
char grade;

if (testscore >= 90) {
grade = 'A';
} else if (testscore >= 80) {
grade = 'B';
} else if (testscore >= 70) {
grade = 'C';
} else if (testscore >= 60) {
grade = 'D';
} else {
grade = 'F';
}
System.out.println("Grade = " + grade);
}
}
The output from the program is:
Grade = C

Posted in Data Structures using Java