src/main/java/org/wltea/analyzer/core/Lexeme.java
public boolean append(Lexeme l , int lexemeType){
		if(l != null && this.getEndPosition() == l.getBeginPosition()){
			this.length += l.getLength();
			this.lexemeType = lexemeType;
			return true;
		}else {
			return false;
		}
	}
public boolean append(Lexeme l , int lexemeType){
		if(l != null && this.getEndPosition() == l.getBeginPosition()){
			this.length += l.getLength();
			this.lexemeType = lexemeType;
			return true;
		}else {
			return false;
		}
	}
合并两个相邻的词元
@param l
@param lexemeType
@return boolean 词元是否成功合并