PROGRAM 6:
XML CODE:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical"
 android:padding="16dp">
 tools:context=".MainActivity">

<EditText
 android:id="@+id/editText"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:hint="Enter the text" />

<RadioGroup
 android:id="@+id/radioGroup"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_below="@id/editText"
 android:layout_marginTop="16dp"
 android:orientation="horizontal"
>

<RadioButton
 android:id="@+id/radioButton1"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="I B.Sc CS"/>

<RadioButton
 android:id="@+id/radioButton2"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="II B.Sc CS"/>

<RadioButton
 android:id="@+id/radioButton3"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="III B.Sc CS"/>
 </RadioGroup
>

<CheckBox
 android:id="@+id/checkbox"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_below="@id/editText"
 android:text="Check Me"
 android:layout_marginBottom="16dp"/>

<Button
 android:id="@+id/button"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_below="@id/checkbox"
 android:layout_marginTop="16dp"
 android:text="Show Toast" />
</LinearLayout
>
JAVA CODE:
package com.example.program6;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 EditText editText = findViewById(R.id.editText);
 CheckBox checkbox = findViewById(R.id.checkbox);
 RadioGroup radioGroup = findViewById(R.id.radioGroup);
 Button button = findViewById(R.id.button);
 button.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 String text=editText.getText().toString();
 boolean isChecked=checkbox.isChecked();
 int SR=radioGroup.getCheckedRadioButtonId();
 String rt="";
 if(SR!=-1){
 RadioButton SRB=findViewById(SR);
 rt=SRB.getText().toString();
 }
 String message=text+rt+(isChecked ? "in
PSGCAS":"Unchecked");

Toast.makeText(MainActivity.this,message,Toast.LENGTH_LONG).show();
 }
 });
 }
}