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Java JTextField Example with ActionListener

DarkDevilor answered on November 23, 2022 Popularity 4/10 Helpfulness 1/10

answer Java JTextField Example with ActionListener

Java JTextField Example with ActionListener

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import javax.swing.*;  
import java.awt.event.*;  
public class TextFieldExample implements ActionListener{  
    JTextField tf1,tf2,tf3;  
    JButton b1,b2;  
    TextFieldExample(){  
        JFrame f= new JFrame();  
        tf1=new JTextField();  
        tf1.setBounds(50,50,150,20);  
        tf2=new JTextField();  
        tf2.setBounds(50,100,150,20);  
        tf3=new JTextField();  
        tf3.setBounds(50,150,150,20);  
        tf3.setEditable(false);   
        b1=new JButton("+");  
        b1.setBounds(50,200,50,50);  
        b2=new JButton("-");  
        b2.setBounds(120,200,50,50);  
        b1.addActionListener(this);  
        b2.addActionListener(this);  
        f.add(tf1);f.add(tf2);f.add(tf3);f.add(b1);f.add(b2);  
        f.setSize(300,300);  
        f.setLayout(null);  
        f.setVisible(true);  
    }         
    public void actionPerformed(ActionEvent e) {  
        String s1=tf1.getText();  
        String s2=tf2.getText();  
        int a=Integer.parseInt(s1);  
        int b=Integer.parseInt(s2);  
        int c=0;  
        if(e.getSource()==b1){  
            c=a+b;  
        }else if(e.getSource()==b2){  
            c=a-b;  
        }  
        String result=String.valueOf(c);  
        tf3.setText(result);  
    }  
public static void main(String[] args) {  
    new TextFieldExample();  
} }

Popularity 4/10 Helpfulness 1/10 Language java

Source: www.javatpoint.com

Tags: java jtextfield

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