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package javaapplication76; public class Kalkulator extends javax.swing.JFrame {     private String dt1 = "";     private String dt2 = "";     private int data1 = 0;     private int data2 = 0;     private int hasil = 0;     private int plusop = 0;     private int multiop = 0;     private String dtdummy = "";     private int opr = 0;     private String opraksi = "";         public Kalkulator() {         initComponents();     }     @SuppressWarnings("unchecked")     // <editor-fold defaultstate="collapsed" desc="Generated Code">                              private void initComponents() { ...

Algoritma Program Kalkulator Deklarasi Cetak dt1 pada TextField Cetak opr pada TextField Cetak dt2 pada TextField Nilai   tanda (=) dan hasil dari opraksi {     Jika anda memilih operasi (+), maka hasil ← a + b } {     Jika anda memilih operasi (x), maka hasil ← a * b } Tampilkan   hasil FlowChart Pseudo Code private String dt1 = "";     private String dt2 = "";     private int data1 = 0;     private int data2 = 0;     private int hasil = 0;     private int plusop = 0;     private int multiop = 0;     private String dtdummy = "";     private int opr = 0;     private String opraksi = ""; Input nilai dt1 Btn1   → setText (“1”); Input operator ((+)this.opraksi = " plus"; this.opr++;), ((x) this.opraksi = "kali";this.opr++;) Input nilai dt2 Btn...