tablefile.java

原创的DBMS 数据库！ 功能很简单

package code;

public class Tablefile {
	public String tablename="";
	public int headlongth=0;
	public int headnum=0;
	public int filelongth=0;
	public int filenum=0;
public Column[] cols=new Column[10];
	public Tablefile()
	{
		for(int i=0;i<10;i++)
		{
			cols[i]=new Column();
		}
	}
}

class Column{
	public String name="";
	public String type="";
	public Column()
	{
		name="";
		type="";
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		 StringBuilder builder = null; 
	       if(name != null) 
	           builder = new StringBuilder(name); 
	       else    
	           builder = new StringBuilder(100); 
	       builder.setLength(100); 
	       this.name = builder.toString(); 
	}
	public String getType() {
		return type;
	}
	public void setType(String type) {
		 StringBuilder builder = null; 
	       if(type != null) 
	           builder = new StringBuilder(type); 
	       else    
	           builder = new StringBuilder(100); 
	       builder.setLength(100); 
	       this.type = builder.toString(); 
		
	}
}