Tugas4_Java(PBO)

1.Mencari Luas dan Keliling SEGITIGA:
package 30411199;
public class segitiga extends javax.swing.JFrame {
    float alas,tinggi,L,K;
    public segitiga() {
        initComponents();
    }

 private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
        alas = Float.parseFloat(jTextField1.getText());
        tinggi = Float.parseFloat(jTextField2.getText());
      
         L= (float) 0.5 * (alas*tinggi);
        jTextField3.setText(String.valueOf(ls));
      
         K = (float) 3* alas;
        jTextField4.setText(String.valueOf(kl));
    } 
}

hasil :

2.Mencari Luas dan Keliling PERSEGI PANJANG :
package 30411199;
public class persegipanjang extends javax.swing.JFrame {
    int panjang,lebar,L,K;
    public persegipanjangp() {
        initComponents();
    }

 private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
        panjang = Integer.parseInt(jTextField1.getText());
        lebar = Integer.parseInt(jTextField2.getText());
      
         L = panjang*lebar;
        jTextField3.setText(String.valueOf(ls));
      
         K = 2*(panjang+lebar);
        jTextField4.setText(String.valueOf(kl));
    } 
}


hasil :

3.Mencari Luas dan Keliling LINGKARAN :

package 30411199;
public class lingkaran extends javax.swing.JFrame {
    float jari,L,K;
    public lingkaran() {
        initComponents();
    }

 

 private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
         jari = Float.parseFloat(jTextField1.getText());
         phi = (float) 3.14;
      
         L = phi*(jari*jari);
        jTextField3.setText(String.valueOf(ls));
      
         K = 2*(phi*jari);
        jTextField4.setText(String.valueOf(kl));
    } 
}


hasil :