Question

Rewrite this if/else if code segment into a switch statement int num = 0; int a = 10, b = 20, c = 20, d = 30, x = 40; if (num > 101 && num <= 105) { a += 1; } else if (num == 208) { b += 1; x = 8; } else if (num > 208 && num < 210) { c = c * 3; } else { d += 1004; }

Answer 1

public class SwitchCase {

public static void main(String[] args) {

int num = 0;

int a = 10, b = 20, c = 20, d = 30, x = 40;

switch (num){

case 102: a += 1;

case 103: a += 1;

case 104: a += 1;

case 105: a += 1;

break;

case 208: b += 1; x = 8;

break;

case 209: c = c * 3;

case 210: c = c * 3;

break;

default: d += 1004;

}

}

}

Step-by-step explanation:

• Given above is the equivalent code using Switch case in Java
• The switch case test multiple levels of conditions and can easily replace the uses of several if....elseif.....else statements.
• When using a switch, each condition is treated as a separate case followed by a full colon and the the statement to execute if the case is true.
• The default statement handles the final else when all the other coditions are false