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@madan712
madan712 / ReadWriteExcelFile.java
Created October 18, 2012 14:35
Read / Write Excel file (.xls or .xlsx) using Apache POI
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
@lttlrck
lttlrck / gist:9628955
Created March 18, 2014 20:34
rename git branch locally and remotely
git branch -m old_branch new_branch # Rename branch locally
git push origin :old_branch # Delete the old branch
git push --set-upstream origin new_branch # Push the new branch, set local branch to track the new remote
@HugoGresse
HugoGresse / 1 DynamicExoPlayer
Last active September 5, 2018 03:42
ExoPlayer implementation with a persisten TextureView & SurfaceTexture among context
import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Color;
import android.graphics.SurfaceTexture;
import android.os.Build;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Surface;
import android.view.TextureView;
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="your.package.name" >
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:allowBackup="true"
@gunjanpatel
gunjanpatel / revert-a-commit.md
Last active July 25, 2024 19:20
Git HowTo: revert a commit already pushed to a remote repository

Revert the full commit

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32: