Suspend

Select the Suspend command [ Suspend ] to halt the execution of the currently selected thread in a debug target. Once the selected thread is suspended you can then examine its stack frames.

Debugger
Local debugging
Remote debugging Changing debugger launch options
Connecting to a remote VM with the Remote Java application launch configuration
Disconnecting from a VM
Launching a Java program
Preparing to debug
Resuming the execution of suspended threads
Running and debugging
Stepping through the execution of a program
Suspending threads Debug View
Debug preferences
Execution Control Commands
Resume
Run Menu