添加getter方法是一种方法。。。
我搜索了这个主题并找到了答案,但作为一个java假人,我并没有真正理解所有内容,因此我试图将我找到的最佳答案执行到一个小例子中:
package return2valuesofdifftype;
public class Return2ValuesOfDiffType {
public static void main(String[] args) {
System.out.println("started");
String strHere = "nothing happened";
int iHere = -5;
Method myM = new Method();
ReturningValues myRV = new ReturningValues(strHere, iHere);
myRV = myM.method(5, 10); //should return a RV holding the string "correct" and the integer 1
//so far so good (i hope), but how to get this string and integer out of RV ???
System.out.println("string = "+strHere+" ,en i = "+iHere);
}
}
package return2valuesofdifftype;
public final class ReturningValues {
private final String value;
private final int index;
public ReturningValues(String value, int index) {
this.value = value;
this.index = index;
}
}
package return2valuesofdifftype;
public class Method {
public ReturningValues method(int five, int ten) {
String str="";
int i=-1;
if(five==5){str="correct";}
else{str="wrong";}
if(ten==10){i=1;}
else{i=0;}
ReturningValues rv = new ReturningValues(str, i);
return rv;
}
}
我的问题:如何将这个整数和字符串从RV中取出?非常感谢!dad
public final class ReturningValues
{
private final String value;
private final int index;
public ReturningValues( String value, int index )
{
this.value = value;
this.index = index;
}
public String getString()
{
return value;
}
public String getInteger()
{
return index;
}
}
另一种方法是更改属性对公众的可见性。
public final class ReturningValues
{
public final String value;
public final int index;
public ReturningValues( String value, int index )
{
this.value = value;
this.index = index;
}
}
为ReturningValues实现中的两个变量提供getter,如下所示:
public String getValue() {
return value;
}
public int getIndex() {
return index;
}
然后您可以调用myRV.getValue();或myRV.getIndex();