swift programming Use Grand Central Dispatch to modify the following method definition so that reallyLongCalculation() will be performed in a background thread: func buttonPressed() { var result: Int result = reallyLongCalculation() resultTextField.text = "\(result)" }
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swift
Use Grand Central Dispatch to modify the following method definition so that reallyLongCalculation() will be performed in a background thread:
func buttonPressed() {
var result: Int
result = reallyLongCalculation()
resultTextField.text = "\(result)"
}
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- Java program doesnt work please help. import java.applet.*; import java.awt.*; import java.awt.event.*; public class Truck extends Applet implement ActionListener { int x,y,z; int t1,t2: Button b1,b2; String msg=" "; void slep() { try { Thread.sleep(100); } catch(Exception ex) { } } public void init() { t1=0; t2=1; X=20; y=60; setLayout(new FlowLayout(FlowLayout.CENTER)); Label 1=new Label("webeduclick"); b1=new Button("Forward"); add(b1); b2=new Button("Stop"); add(b2); b1.addActionListener(this); b2.addActionListener(this); } public void start() { } public void actionPerformed(ActionEvent e) { String s=e.getActionCommand(); if(s.equals("Stop")) { msg=" "; repaint(); } } public void paint(Graphics g) { setBackground(Color.green); z=getWidth(); Color c1=new Color(20.160.200); Color c2=new Color(200.60.200); g.setColor(c1); g.drawline(0,y+75,z,y=75); g.setColor(Color.yellow); g.fillRoundRect(x,y+20,100,40,5,5); g.fillArc(x+90,y+20,20,40,270,180); g.setColor(Color.orange);…Describe in pseudocode how you would use the interrupted() method to determine whether or not a thread should continue executing its code.Java: In this scenario, one thread is waiting for another thread to finish transfer and vice versa. They are stuck with each other, and the program cannot continue. Thus, deadlock occurs. To avoid deadlock it is necessary to lock accounts in the same order. To fix the program we’ll give each account a unique number so that we can lock accounts in the same order when transferring the money. // // DeadlockAccounts.java // public class DeadlockAccounts { public static void main(String[] args) throws InterruptedException { class Account { int balance = 100; public Account(int balance) { this.balance = balance; } public synchronized void deposit(int amount) { balance += amount; } public synchronized boolean withdraw(int amount) { if (balance >= amount) { balance -= amount; return true; } return false; } public synchronized boolean transfer(Account destination, int amount) { if (balance >= amount) { balance -= amount; synchronized(destination) {…