StreamApiExceptionbasics

class Arr {

public static void main (String args[]) {

try{

throw new RuntimeException();

}catch(RuntimeException e) {

try{

System.out.println("Hello");

e.printStackTrace();

}

catch(Exception x) {

System.out.println(x);

}

}

}

}

• It will print Hello

• It will Print Hello and RuntimeException

• program will not compile

• It will throw run time exception

1. public class Threads3 implements Runnable {

2. public void run() {

3. System.out.print("running");

4. }

5. public static void main(String[] args) {

6. Thread t = new Thread(new Threads3());

7. t.run();

8. t.run();

9. t.start();

10. }

11. }

• Compilation fails.

• The code executes and prints "running".

• The code executes and prints "runningrunningrunning".

• An exception is thrown at runtime.

class Rose {

static int j;

public int arr() {

int y[] = { 5 , 7, 8 , 6};

j = y[2]; return j;

}

public static void main (String args[]) {

Rose r=new Rose();

int x = r.arr( );

System.out.println(x);

}

}

}

What would be the output when Sam compile and execute this program?

• 7

• 8

• ccompilation error

• exception thrown

public class Rose{

public static void main(String[] args) {

char x = 'a';

switch(x){

case 66: System.out.println( "B" +"");break;

case 72: System.out.println( "H"+ "");break;

case 97: System.out.println("A"+ "");break;

case 89: System.out.println( "Y" + "");break;

default: System.out.println( "default");break;

}

}]

• program will not compile

•  Program will display a Y

•  Program will display A

•  Program will display a Y default

import java.util.*;

class Rose {

public static void main (String args[]) {

ArrayList <Integer> arraylist = new ArrayList<Integer>();

arraylist.add(0);

arraylist.add(2);

arraylist.add(3);

arraylist.add(4);

int y= arraylist.size();

switch(y) {

case 0: System.out.println(0);break;

case 2: System.out.println(2);break;

case 4: System.out.println(4);break;

case 5: System.out.println(5);break;

default: System.out.println("Default");

}

}

• 4

• Compilation error

• 2