Main.java:15: error: class MainActivity is public, should be declared in a file named MainActivity.java
public class MainActivity extends AppCompatActivity {
^
Main.java:3: error: package android.content does not exist
import android.content.SharedPreferences;
^
Main.java:4: error: package android.preference does not exist
import android.preference.PreferenceManager;
^
Main.java:6: error: package android.support.v7.app does not exist
import android.support.v7.app.AppCompatActivity;
^
Main.java:7: error: package android.os does not exist
import android.os.Bundle;
^
Main.java:9: error: package android.view does not exist
import android.view.View;
^
Main.java:10: error: package android.widget does not exist
import android.widget.Button;
^
Main.java:11: error: package android.widget does not exist
import android.widget.TextView;
^
Main.java:15: error: cannot find symbol
public class MainActivity extends AppCompatActivity {
^
symbol: class AppCompatActivity
Main.java:20: error: cannot find symbol
TextView key1;
^
symbol: class TextView
location: class MainActivity
Main.java:21: error: cannot find symbol
TextView key2;
^
symbol: class TextView
location: class MainActivity
Main.java:22: error: cannot find symbol
Button jump,reset;
^
symbol: class Button
location: class MainActivity
Main.java:25: error: cannot find symbol
protected void onCreate(Bundle savedInstanceState) {
^
symbol: class Bundle
location: class MainActivity
Main.java:24: error: method does not override or implement a method from a supertype
@Override
^
Main.java:26: error: cannot find symbol
super.onCreate(savedInstanceState);
^
symbol: variable super
location: class MainActivity
Main.java:27: error: package R does not exist
setContentView(R.layout.activity_main);
^
Main.java:29: error: cannot find symbol
key1=(TextView)findViewById(R.id.key1);
^
symbol: class TextView
location: class MainActivity
Main.java:29: error: package R does not exist
key1=(TextView)findViewById(R.id.key1);
^
Main.java:30: error: cannot find symbol
key2=(TextView)findViewById(R.id.key2);
^
symbol: class TextView
location: class MainActivity
Main.java:30: error: package R does not exist
key2=(TextView)findViewById(R.id.key2);
^
Main.java:32: error: cannot find symbol
SharedPreferences mPrefernece= PreferenceManager.getDefaultSharedPreferences(MainActivity.this);
^
symbol: class SharedPreferences
location: class MainActivity
Main.java:32: error: cannot find symbol
SharedPreferences mPrefernece= PreferenceManager.getDefaultSharedPreferences(MainActivity.this);
^
symbol: variable PreferenceManager
location: class MainActivity
Main.java:37: error: package SharedPreferences does not exist
final SharedPreferences.Editor medit=mPrefernece.edit();
^
Main.java:39: error: cannot find symbol
jump=(Button)findViewById(R.id.jump);
^
symbol: class Button
location: class MainActivity
Main.java:39: error: package R does not exist
jump=(Button)findViewById(R.id.jump);
^
Main.java:40: error: package View does not exist
jump.setOnClickListener(new View.OnClickListener() {
^
Main.java:51: error: cannot find symbol
reset=(Button)findViewById(R.id.reset);
^
symbol: class Button
location: class MainActivity
Main.java:51: error: package R does not exist
reset=(Button)findViewById(R.id.reset);
^
Main.java:52: error: package View does not exist
reset.setOnClickListener(new View.OnClickListener() {
^
29 errors