public class OperatorsAndExpressions{
void singleArithmaticOperator(){
float i = 2.0f,j = 10.0f;
int m = 20,n = 10;
System.out.println((++i)*(j--));
System.out.println("i="+i+",j="+j);
System.out.println((i++)*(j--));
System.out.println("i="+i+",j="+j);
System.out.println((--m)*(n++));
System.out.println("m="+m+",n="+n);
System.out.println((m--)*(n++));
System.out.println("m="+m+",n="+n);
}
public static void main(String arga[]){
OperAndExpressions OperAndExp = new OperatorsAndExpressions();
OperAndExp.singleArithmaticOperator();
}
}
就是这个代码.这个源代码应该没问题的.但不知怎么用JAVAC编译的时候,显示有100个错误.是不是要把java重新装一次啊?还有,哪个JAVA前辈能不能把QQ告诉我啊,万分感激.
void singleArithmaticOperator(){
float i = 2.0f,j = 10.0f;
int m = 20,n = 10;
System.out.println((++i)*(j--));
System.out.println("i="+i+",j="+j);
System.out.println((i++)*(j--));
System.out.println("i="+i+",j="+j);
System.out.println((--m)*(n++));
System.out.println("m="+m+",n="+n);
System.out.println((m--)*(n++));
System.out.println("m="+m+",n="+n);
}
public static void main(String arga[]){
OperAndExpressions OperAndExp = new OperatorsAndExpressions();
OperAndExp.singleArithmaticOperator();
}
}
就是这个代码.这个源代码应该没问题的.但不知怎么用JAVAC编译的时候,显示有100个错误.是不是要把java重新装一次啊?还有,哪个JAVA前辈能不能把QQ告诉我啊,万分感激.
void singleArithmaticOperator(){
float i = 2.0f,j = 10.0f;
int m = 20,n = 10;
System.out.println((++i)*(j--));
System.out.println("i="+i+",j="+j);
System.out.println((i++)*(j--));
System.out.println("i="+i+",j="+j);
System.out.println((--m)*(n++));
System.out.println("m="+m+",n="+n);
System.out.println((m--)*(n++));
System.out.println("m="+m+",n="+n);
}
public static void main(String arga[]){
OperatorsAndExpressions OperAndExp = new OperatorsAndExpressions();//这里错了
OperAndExp.singleArithmaticOperator();
}
}
怎么会有那么错,你把类名拼错了OperAndExpressions OperAndExp = new OperatorsAndExpressions();
看一下你拼成什么了,^_^,要注意小细节!
void singleArithmaticOperator() {
float i = 2.0f, j = 10.0f;
int m = 20, n = 10;
System.out.println((++i) * (j--));
System.out.println("i=" + i + ",j=" + j);
System.out.println((i++) * (j--));
System.out.println("i=" + i + ",j=" + j);
System.out.println((--m) * (n++));
System.out.println("m=" + m + ",n=" + n);
System.out.println((m--) * (n++));
System.out.println("m=" + m + ",n=" + n);
} public static void main(String arga[]) {
OperatorsAndExpressions OperAndExp = new OperatorsAndExpressions();
OperAndExp.singleArithmaticOperator();
}
}
执行结果30.0
i=3.0,j=9.0
27.0
i=4.0,j=8.0
190
m=19,n=11
209
m=18,n=12