方法在class文件中的存在形式MethodInfo

一个方法对由一个method_info结构所定义。一个class文件中，不会同时出现两个方法同时有相同的名称和描述符

method_info结构如下

参考Field

代码实现

public class MethodInfo {
    private int accessFlags;
    private String name;
    private String descriptor;
    private AttributeInfo[] attributes;
    private CodeAttribute code;

    public MethodInfo(ConstantPool constantPool, Supplier<AttributeInfo> attributeBuilder, ByteBuffer in) {
        BuildUtil info = new BuildUtil(in);
        accessFlags = info.getU2();
        int nameIndex = info.getU2();
        int descriptorIndex = info.getU2();
        int attributesCount = info.getU2();
        attributes = new AttributeInfo[attributesCount];
        for (int i = 0; i < attributes.length; i++) {
            attributes[i] = attributeBuilder.get();
        }
        this.name = ((UTF8Info) constantPool.get(nameIndex)).getString();
        this.descriptor = ((UTF8Info) constantPool.get(descriptorIndex)).getString();
    }