Write a Java expression that will evaluate to true if the arrays arr1 and arr2 a

Question

Write a Java expression that will evaluate to true if the arrays arr1 and arr2 are the same size, and false otherwise. Write a Java expression that will evaluate to true if a char variable, named letter, holds any of the characters *, %, and false otherwise. Write a Java method header for the constructor of a BigTree object. This constructor requires double parameter named size. Write a Java method header for a public, non-static method named enterNames that takes no parameters and returns an array of String objects. Write a Java method header for a public, static method named sumArray that takes an array of double values and returns a single double value. Write a Java method header for a public, static method named makeGrid which takes two integer parameters, named rows and cols, and returns a Grid object.

Explanation / Answer

array.length gives length of the array.

1) arr1.length==arr2.length

2) c=='*'||c=='%'||c=='@'

The method header comprises the access modifiers (Ex:public,public static etc), return type (Ex: int,Double,Grid,String[] etc), method name (Ex:sumArray,makeGrid etc), and parameters (Ex: int a, int b etc).

3) public BigTree(double size);
4) public String[] enterNames();
5) public static Double sumArray(Double[] double_array);
6) public static Grid makeGrid(int rows,int cols);

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