java编程题目这个怎么弄啊。不会啊求解答

Suansu.java
public class Suansu{
private int a;
private int b;

public Suansu(){ //构造函数 初始化a=10,b=5;
this.a=10;
this.b=5;

}
public int AddAB(){ //和
return a+b;
}
public int SubAB(){ //差
return a-b;
}
}
TestSuansu.java
public class TestSuansu{
public static void main(String[] args){
Suansu ss = new Suansu();
System.out.println("a + b = "+ ss.AddAB());
System.out.println("a - b = "+ ss.SubAB());
}
}

简单的不能再简单的入门题目。

说不会是不行的，起码你要问哪里不会，那个知识点不会，或者哪方面不会。

做都懒得做，想都懒得想，题目网上一丢，一句不会没有人会帮你做。

你要说一点都不会，完全都不会，那你做什么题，打开书从头看。

public class TestSuansu() {
    public TestSuansu() {
        int a=10,b=5;
    }
    
    public static void main(String[] args) {
        TestSuansu ts = new TestSuansu();
        ts.AddAB();
        ts.SubAB();
    }
    
    public void AddAB(int a,int b) {
        System.out.pringln("a+b="+(a+b));
       }
    public void SubAB(int a,int b) {
        System.out.println("a-b="+(a-b));
    }
}

public class Suansu {
public Suansu(iint a, int b) {
this.a = a;

this.b = b;

}

public int AddAB() {
return a + b;

}

public int SubAB() {
return a - b;

}

}

//调用程序
public class TestSuansu {
public static void main(String[] args) {
Suansu num = new Suansu(10, 5);

System.out.println(num.AddAB());
System.out.println(num.SubAB());
}

}

public class SuansuTest {
public static void main(String[] args) {
Suansu suansu = new Suansu();
System.out.println(suansu.addAB(suansu.a, suansu.b));
System.out.println(suansu.subAB(suansu.a, suansu.b));
}
}
class Suansu{
public int a;
public int b;
Suansu(){
this.a = 10;
this.b = 5;
}
public int addAB(int a , int b){
return a + b;
}
public int subAB(int a , int b){
return a - b;
}
}