ERRORS of using Runtime.getRuntime() and exec() in Eclipse

When I use Runtime.getRuntime().exec("java ArrayTest")to run a new java application, it failed and I got lots of errors.

Finally, I found the reasons and solutions:



Reasons:


JVM searches this ArrayTest.class under the bin directory,

    then you should add -classpath bin to your exec().


Solutions:




Runtime.getRuntime().exec("java -classpath D:\java\Practice\bin ArrayTest");


Runtime.getRuntime().exec("java -classpath .\bin ArrayTest");    // root directory


Runtime.getRuntime().exec("java -classpath bin ArrayTest");