What does this error mean in Eclipse when debugging? [duplicate]

Question

When I try to debug this error is reported:

ERROR: JDWP Unable to get JNI 1.2 environment, jvm->GetEnv() return code = -2 JDWP exit error AGENT_ERROR_NO_JNI_ENV(183): [../../../src/share/back/util.c:820]

Answer 1

Put System.exit(0); as the last statement of main().