Page 344 - CITS - Computer Software Application -TT

COMPUTER SOFTWARE APPLICATION - CITS

public class SampleExitMethod {
public static void exampleMethod(int[] array1) {
for (int i = 0; i < array1.length; i++) {
//Check condition for i
if (i > 4) {
System.out.println(“Terminating JVM...”);
//Terminates JVM when if condition is satisfied
System.exit(0);
}
System.out.println(“Array Index: “ + i + “ Array Element: “ + array1[i]);
}
}
public static void main(String[] args) {
int[] array1 = { 0, 2, 4, 6, 8, 10, 12, 14, 16 };
//function call
exampleMethod(array1);
}
}
Output:
Array Index: 0 Array Element: 0
Array Index: 1 Array Element: 2
Array Index: 2 Array Element: 4
Array Index: 3 Array Element: 6
Array Index: 4 Array Element: 8
Terminating JVM...
Explanation:
In the above program, an array is being accessed till its index is 4. Until if condition is false i.e., array index <= 4,
JVM will give Array index and element stored at that index as the output.
Once the if condition is true i.e., array index > 4, JVM will execute statements inside the if condition. Here it will
first execute the print statement and when exit(0) method is called it will terminate JVM and program execution.
Example 2
Let’s see one more example of exit() method in a try-catch-finally block.
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
public class check {
public static void main(String[] args) {
try {

//Reads “file.txt” file
BufferedReader br = new BufferedReader(new FileReader(“file.txt”));
// Closes bufferreader br
System.out.println(br.readLine());
br.close();
} // Catches exception
catch (IOException e) {
System.out.println(“Exception caught. Terminating JVM.”);
System.exit(0);

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CITS : IT&ITES - Computer Software Application - Lesson 85 - 93