java 控制台画表格_Java库在控制台上构建和打印表格？
我正在寻找这样的东西，并最终自己写了，我很高兴与大家分享。我想要的东西，我可以用这样的
ConsoleStringTable table= new ConsoleStringTable();
table.addString(0, 0, "AveryVeryVeryLongWord");
table.addString(0, 1, "AnotherWord");
table.addString(1, 0, "Short");
table.addString(1, 1, "Fast");
System.out.println(table.toString());
AveryVeryVeryLongWord AnotherWord
Short Fast
实施
利用番石榴用于填充
package util;
import java.util.HashMap;
import java.util.Map;
import com.google.common.base.Strings;
public class ConsoleStringTable {
private class Index {
int _row, _colum;
public Index (int r, int c) {
_row= r;
_colum= c;
}
@Override
public boolean equals (Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Index other= (Index) obj;
if (_colum != other._colum)
return false;
if (_row != other._row)
return false;
return true;
}
@Override
public int hashCode() {
final int prime= 31;
int result= 1;
result= prime * result + _colum;
result= prime * result + _row;
return result;
}
}
Map _strings= new HashMap();
Map _columSizes= new HashMap();
int _numRows= 0;
int _numColumns= 0;
public void addString (int row, int colum, String content) {
_numRows= Math.max(_numRows, row + 1);
_numColumns= Math.max(_numColumns, colum + 1);
Index index= new Index(row, colum);
_strings.put(index, content);
setMaxColumnSize(colum, content);
}
private void setMaxColumnSize (int colum, String content) {
int size= content.length();
Integer currentSize= _columSizes.get(colum);
if (currentSize == null || (currentSize != null && currentSize < size)) {
_columSizes.put(colum, size);
}
}
public int getColumSize (int colum) {
Integer size= _columSizes.get(colum);
if (size == null) {
return 0;
} else {
return size;
}
}
public String getString (int row, int colum) {
Index index= new Index(row, colum);
String string= _strings.get(index);
if (string == null) {
return "";
} else {
return string;
}
}
public String getTableAsString (int padding) {
String out= "";
for (int r= 0; r < _numRows; r++) {
for (int c= 0; c < _numColumns; c++) {
int columSize= getColumSize(c);
String content= getString(r, c);
int pad= c == _numColumns - 1 ? 0 : padding;
out+= Strings.padEnd(content, columSize + pad, ' ');
}
if (r < _numRows - 1) {
out+= "\n";
}
}
return out;
}
@Override
public String toString() {
return getTableAsString(1);
}
}