interface BrightnessControl{
void plusBrightness();
void minusBrightness();
}
interface A{}
interface B{}
class TV implements Brightness Control,A,B {
public void plusBrightness(){
System.out.println("TV brightness plus");
}
public void minusBrightness(){
System.out.println("TV brightness minus");
}
}
class VPV implements BrightnessControl{
public void plusBright(){
System.out.println("vpv brightness control plus");
}
public void minusBrightness(){
System.out.println("vpv brightness control minus");
}
}
public class testInterface{
public static void main (String[] args){
TV objTV = new TV();
objTV.minusBrightness();
objTV.plusBrightness();
VPV objVPV = new VPV();
objVPV.minusBrightness();
objVPV.plusBrightness();
}
}
错误是在class inplement那 什么缺了个{
void plusBrightness();
void minusBrightness();
}
interface A{}
interface B{}
class TV implements Brightness Control,A,B {
public void plusBrightness(){
System.out.println("TV brightness plus");
}
public void minusBrightness(){
System.out.println("TV brightness minus");
}
}
class VPV implements BrightnessControl{
public void plusBright(){
System.out.println("vpv brightness control plus");
}
public void minusBrightness(){
System.out.println("vpv brightness control minus");
}
}
public class testInterface{
public static void main (String[] args){
TV objTV = new TV();
objTV.minusBrightness();
objTV.plusBrightness();
VPV objVPV = new VPV();
objVPV.minusBrightness();
objVPV.plusBrightness();
}
}
错误是在class inplement那 什么缺了个{
public void plusBright()方法 应该是plusBrightness 楼主 笔误吧
建议楼主用IDE写 这样就能很快的排错了
void plusBrightness();
void minusBrightness();
}
interface A{}
interface B{}
class TV implements Brightness Control,A,B { //BrightnessControl 你两个单词中间有空格.
public void plusBrightness(){
System.out.println("TV brightness plus");
}
public void minusBrightness(){
System.out.println("TV brightness minus");
}
}
class VPV implements BrightnessControl{
public void plusBrightness() { //你这个方法名写错了.应该是plusBrightness();必须重写实现接口里的抽象函数.
System.out.println("vpv brightness control plus");
}
public void minusBrightness(){
System.out.println("vpv brightness control minus");
}
}
public class testInterface{
public static void main (String[] args){
TV objTV = new TV();
objTV.minusBrightness();
objTV.plusBrightness();
VPV objVPV = new VPV();
objVPV.minusBrightness();
objVPV.plusBrightness();
}
}
void plusBrightness();
void minusBrightness();
}
interface A{}
interface B{}
class TV implements Brightness Control,A,B { //BrightnessControl 你两个单词中间有空格.
public void plusBrightness(){
System.out.println("TV brightness plus");
}
public void minusBrightness(){
System.out.println("TV brightness minus");
}
}
class VPV implements BrightnessControl{
public void plusBrightness() { //你这个方法名写错了.应该是plusBrightness();必须重写实现接口里的抽象函数.
System.out.println("vpv brightness control plus");
}
public void minusBrightness(){
System.out.println("vpv brightness control minus");
}
}
public class testInterface{
public static void main (String[] args){
TV objTV = new TV();
objTV.minusBrightness();
objTV.plusBrightness();
VPV objVPV = new VPV();
objVPV.minusBrightness();
objVPV.plusBrightness();
}
}
用ide写吧,我以前也是用txt写,开发效率很低. Eclips , netBeans都行