java枚举求助
enum Token_Type{
ORIGIN,SCALE,ROT,IS,
TO,STEP,DRAW,FOR,FROM,
T,
SEMICO, L_BRACKET, R_BRACKET, COMMA,// 分隔符
PLUS, MINUS, MUL, DIV, POWER,// 运算符
FUNC, // 函数（调用）
CONST_ID, // 常数
NONTOKEN, // 空记号（源程序结束）
ERRTOKEN
}
public class Token {
Token_Type type;
String lexeme;
double value;
String mathfun;
}public class scanner {
Token []TokenTab =
{new Token(Token_Type.CONST_ID,"PI",3.1415926,null),//The constructor Token(Token_Type, String, double, null) is undefined
new Token(Token_Type.CONST_ID,"E",2.71828,null),
new Token(Token_Type.T,"T",0.0,null),
new Token(Token_Type.FUNC,"SIN",0.0,"sin"),
new Token(Token_Type.FUNC,"COS",0.0,"cos"),
new Token(Token_Type.FUNC,"TAN",0.0,"tan"),
new Token(Token_Type.FUNC,"LN",0.0,"log"),
new Token(Token_Type.FUNC,"EXP",0.0,"exp"),
new Token(Token_Type.FUNC,"SQRT",0.0,"sqrt"),
new Token(Token_Type.ORIGIN,"ORIGIN",0.0,NULL),
new Token(Token_Type.SCALE,"SCALE",0.0,NULL),
new Token(Token_Type.ROT,"ROT",0.0,NULL),
new Token(Token_Type.IS,"IS",0.0,NULL),
new Token(Token_Type.FOR,"FOR",0.0,NULL),
new Token(Token_Type.FROM,"FROM",0.0,NULL),
new Token(Token_Type.TO,"TO",0.0,NULL),
new Token(Token_Type.STEP,"STEP",0.0,NULL),
new Token(Token_Type.DRAW,"DRAW",0.0,NULL)
}
}