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Q1. Design a maths calculator - addition, subtraction, division and

multiplication.

code for "+" button :

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {

Double a,b,Result

a=Double.parseDouble(jTextField1.getText());
b=Double.parseDouble(jTextField2.getText());

Result=a+b;

jTextField3.setText(Double.toString(Result));

}