35 lines
814 B
Java
35 lines
814 B
Java
import java.awt.*;
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import javax.swing.*;
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import java.awt.event.*;
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public class Observer implements ActionListener {
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private JTextField outputField;
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private boolean toDeg;
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public Observer(boolean toDeg) {
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this.toDeg = toDeg;
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}
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public void setOutputField(JTextField f) {
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outputField = f;
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}
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public void actionPerformed(ActionEvent ev) {
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try {
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float temp = Float.parseFloat(ev.getActionCommand());
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if (toDeg) {
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temp -= 32f;
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temp *= 5f/9f;
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} else {
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temp *= 9f/5f;
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temp += 32f;
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}
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outputField.setText(Float.toString(temp));
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} catch (NumberFormatException ex) {
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outputField.setText("???");
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}
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}
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} |