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1. Background:

Because I used jdk1.9 to learn before, when I used Luke, I found that the JDK version was too high, and I needed to configure JDK downward, so I copied an installation package from a friend. After the path is reconfigured, an error is reported

2. Problem Description:

Failed to load the JNI shared library

At the same time, a string of paths will appear, indicating that the relevant startup file can not be found, resulting in eclipse opening failure

3. Solution process and Thinking:

In order to improve the efficiency of solving problems that we haven’t met before, we should find GG first

There are two solutions given by the predecessors

One is that the bit of OS is inconsistent with the bit of JDK. A 64bit system is installed with a 32bit JDK

At first, I didn’t think I would make such a low-level problem, but this is what I actually encountered. This is the jdk-8u151-windows-i586.exe, which is a 32bit installation package. I don’t know yet. After restarting the computer and confirming the path again and again, I installed three jdks: 1.8×64, 1.9×64, and this package which I didn’t know. Then I compared the configurations one by one to eliminate the path and eclipse problems. Later, I found out that the bag I packed was really 32

I haven’t met the second problem, so I just sorted out and moved the solutions

If there is no prompt file in the path, you need to copy a corresponding file or re install the corresponding JDK version

If there are related files under the path, we should consider whether it is the installation path (Java)_ The problem of repeated conflict. Check the environment variable or registry to see if there is a residual unused or invalid configuration path, delete and update to the latest Java installation path, and update the path environment variable (% Java)_ HOME%\bin）。

4. Remarks:

In Windows OS, generally:

The 32-bit software is installed to C:: program files (x86) by default\

64 bit software, the default installation to: C:: program files\