java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference

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Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference
java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference
at com.example.jithin.myapplication.Device_Main.getViews(Device_Main.java:83)
at com.example.jithin.myapplication.Device_Main.init(Device_Main.java:66)
at com.example.jithin.myapplication.Device_Main.onCreateView(Device_Main.java:58)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1252)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:742)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1617)
at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:570)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1177)
at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:608)
at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:570)
at android.support.design.widget.TabLayout$ViewPagerOnTabSelectedListener.onTabSelected(TabLayout.java:2008)
at android.support.design.widget.TabLayout.selectTab(TabLayout.java:1025)
at android.support.design.widget.TabLayout.selectTab(TabLayout.java:995)
at android.support.design.widget.TabLayout$Tab.select(TabLayout.java:1272)
at android.support.design.widget.TabLayout$TabView.performClick(TabLayout.java:1377)
at android.view.View$PerformClick.run(View.java:21147)
at android.os.Handler.handleCallback(Handler.java:739)

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