My Build Error

G:\Development\1. RSM\Non -Electric 17\forge>gradlew.bat build
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 http://mcp.ocean-labs.de/
 Searge, ProfMobius, Fesh0r,
 R4wk, ZeuX, IngisKahn
 MCP Data version : unknown
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:downloadClient SKIPPED
:downloadServer SKIPPED
:extractUserDev
:mergeJars SKIPPED
:applyBinPatches SKIPPED
:downloadMcpTools UP-TO-DATE
:genSrgs UP-TO-DATE
:deobfBinJar UP-TO-DATE
:compileApiJava UP-TO-DATE
:processApiResources UP-TO-DATE
:apiClasses UP-TO-DATE
:sourceMainJava
:compileJava
warning: [options] bootstrap class path not set in conjunction with -source 1.6
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\goldRocketSword.java:20: error: cannot find symbol
                super(ToolMaterial.GOLD);
                      ^
  symbol:   variable ToolMaterial
  location: class goldRocketSword
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ironRocketSword.java:20: error: cannot find symbol
                super(ToolMaterial.IRON);
                      ^
  symbol:   variable ToolMaterial
  location: class ironRocketSword
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:64: error: cannot find symbol
                        'Y', Item.silk, 'X', Block.wood, 'Z', ironStick
                                 ^
  symbol:   variable silk
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:64: error: cannot find symbol
                        'Y', Item.silk, 'X', Block.wood, 'Z', ironStick
                                             ^
  symbol:   variable Block
  location: class ModItems
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:72: error: cannot find symbol
                        'Y', Item.silk, 'X', Block.cobblestone, 'Z', ironStick
                                 ^
  symbol:   variable silk
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:72: error: cannot find symbol
                        'Y', Item.silk, 'X', Block.cobblestone, 'Z', ironStick
                                             ^
  symbol:   variable Block
  location: class ModItems
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:81: error: cannot find symbol
                        'Y', Item.silk, 'X', Block.stone, 'Z', ironStick

                                 ^
  symbol:   variable silk
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:81: error: cannot find symbol
                        'Y', Item.silk, 'X', Block.stone, 'Z', ironStick

                                             ^
  symbol:   variable Block
  location: class ModItems
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:90: error: cannot find symbol
                        'Y', Item.silk, 'X', Item.ingotIron, 'Z', ironStick
                                 ^
  symbol:   variable silk
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:90: error: cannot find symbol
                        'Y', Item.silk, 'X', Item.ingotIron, 'Z', ironStick
                                                 ^
  symbol:   variable ingotIron
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:99: error: cannot find symbol
                        'Y', Item.silk, 'X', Item.ingotGold, 'Z', ironStick
                                 ^
  symbol:   variable silk
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:99: error: cannot find symbol
                        'Y', Item.silk, 'X', Item.ingotGold, 'Z', ironStick
                                                 ^
  symbol:   variable ingotGold
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:108: error: cannot find symbol
                        'Y', Item.silk, 'X', Item.diamond, 'Z', ironStick
                                 ^
  symbol:   variable silk
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:108: error: cannot find symbol
                        'Y', Item.silk, 'X', Item.diamond, 'Z', ironStick
                                                 ^
  symbol:   variable diamond
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:116: error: cannot find symbol
                        'X', Item.ingotIron
                                 ^
  symbol:   variable ingotIron
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:123: error: cannot find symbol
                        'X', Item.ingotIron
                                 ^
  symbol:   variable ingotIron
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:130: error: cannot find symbol
                        'X', Item.ingotIron
                                 ^
  symbol:   variable ingotIron
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:137: error: cannot find symbol
                        'X', Item.ingotIron
                                 ^
  symbol:   variable ingotIron
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:144: error: cannot find symbol
                        'X', Item.ingotIron
                                 ^
  symbol:   variable ingotIron
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:150: error: cannot find symbol
                        'X', Item.ingotIron
                                 ^
  symbol:   variable ingotIron
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:158: error: cannot find symbol
             'X', Item.silk
                      ^
  symbol:   variable silk
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\ModItems.java:166: error: cannot find symbol
            'X', Item.silk,
                     ^
  symbol:   variable silk
  location: class Item
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\stoneRocketSword.java:19: error: cannot find symbol
                super(ToolMaterial.STONE);
                      ^
  symbol:   variable ToolMaterial
  location: class stoneRocketSword
G:\Development\1. RSM\Non -Electric 17\forge\build\sources\java\com\biggles2206\
rsm\items\woodRocketSword.java:19: error: cannot find symbol
                super(ToolMaterial.WOOD);
                      ^
  symbol:   variable ToolMaterial
  location: class woodRocketSword
24 errors
1 warning
:compileJava FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug
option to get more log output.

BUILD FAILED

Total time: 16.154 secs

G:\Development\1. RSM\Non -Electric 17\forge>