Answer Posted / santosh singh

'System'is a class in it out is a field defined as static
so we can write System.out
out is object defined in PrintStream class in printstream
class tere is a method println()so we can call that method
by out.println()printstream class is defind in java.io
package so if we want to use it so we import java.io package
so it is better to cal system.out.println()it give the same
result

Draw a UML class diagram for the code fragment given below: public class StringApplet extends Applet { private Label sampleString; private Button showTheString; private ButtonHandler bHandler; private FlowLayout layout; public StringApplet() { sampleString = new Label(" "); showTheString = new Button (" Show the String"); bHandler = new ButtonHandler(); layout = new FlowLayout(); showTheString.addActionListener(bHandler); setLayout(layout); add(sampleString); add(showTheString); } class ButtonHandler implements ActionListener { public void actionPerformed(ActionEvent e) { samplestring.setText("Good Morning"); } } } Note: The methods need not be indicated on the diagram.

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