Java的源代码中定义几个类,编译结果就生成几个以.class为后缀的字节码文件。()
Java的源代码中定义几个类,编译结果就生成几个以.class为后缀的字节码文件。()
Java的源代码中定义几个类,编译结果就生成几个以.class为后缀的字节码文件。()
A.public class test{
B.public class Test{ public int x=0;public int x=0; public test (intx) public Test (int x){ {this.x=x; this.x=x;} }} }
C.public class Test extends T1,T2{
D.protected class Test extends T2{ public int=0;public int x=0; public Test(int x){Public Test (int x){ this.x=x;this.x=x: }} }}
A.public class test { public int x=0; public test(int x) { this.x=x; } }
B.public class Test { public int x=0; public Test(int x) { this.x=x; } }
C.public class Test extends Ti,T2 { public int x=0; public Test(int x) { this.x=x; } }
D.protected class Test extends T2 { public int x=0; public Test(int x) { this.x=x; } }
A、public float aMethod(float a, float b, float c){}
B、public float aMethod(float c, float d){}
C、public int aMethod(int a, int b){}
D、public float aMethod(int a, int b, int c){}
A、编译错误
B、运行期异常,异常类型为NullPointerException
C、运行期异常,异常类型为ArithmeticExceptioin
D、正确运行,但无输出内容
//Sum.Java源代码
public class Sum {
public static void main(String[]args){
int j=10;
System.out.println("j is:"+j);
calculate(j);
System.out.println("At last,j is:"+j);
}
static void calculate(int j)
{
for (int i=0;i<10;i++)
j++;
System.out.println("j in calculate() is: "+j);
}
}
输出结果为:
j is:(______)
j in calculate() is :(______)
At last j is : (______)
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