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  1. /usr/libexec/java_home -v 1.7.0_40 --exec java -version
  2. /usr/libexec/java_home -v 1.7.0_40 --exec javac -version
  3.  
  4. java -version
  5. java version "1.8.0-ea"
  6. Java(TM) SE Runtime Environment (build 1.8.0-ea-b108)
  7. Java HotSpot(TM) 64-Bit Server VM (build 25.0-b50, mixed mode)
  8.  
  9. export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home
  10.  
  11. #!/bin/bash
  12. export JAVA_HOME=$(/usr/libexec/java_home -v 1.7)
  13.  
  14. setjdk() {
  15. export JAVA_HOME=$(/usr/libexec/java_home -v $1)
  16. }
  17.  
  18. $ java -version
  19. java version "1.7.0_51"
  20. Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
  21. Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)
  22.  
  23. $ setjdk 1.6
  24. $ java -version
  25. java version "1.6.0_65"
  26. Java(TM) SE Runtime Environment (build 1.6.0_65-b14-462-11M4609)
  27. Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-462, mixed mode)
  28.  
  29. $ setjdk 1.8
  30. $ java -version
  31. java version "1.8.0"
  32. Java(TM) SE Runtime Environment (build 1.8.0-b132)
  33. Java HotSpot(TM) 64-Bit Server VM (build 25.0-b70, mixed mode)
  34.  
  35. setjdk() {
  36. export JAVA_HOME=$(/usr/libexec/java_home -v $1)
  37. sudo ln -nsf ${JAVA_HOME%/*} /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK
  38. }
  39. setjdk 1.8
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